博客园_Technology Life

ADO.NET Code Samples Collection【转载】

2010-11-19T05:15:00Z

原文链接：http://blogs.msdn.com/b/jmeier/archive/2010/10/31/ado-net-code-samples-collection.aspx

版权声明：本文全部版权归原作者所有。

ADO.NET Code Samples Collection

J.D. Meier

31 Oct 2010 3:17 PM

The ADO.NET Code Samples Collection is a roundup and map of some of the various data access code samples from various sources including the MSDN library, Code Gallery, CodePlex, and Microsoft Support.

You can add to the code examples collection by sharing in the comments or emailing me at FeedbackAndThoughts at live.com.

Common Categories for ADO.NET Code Samples
The ADO.NET Code Samples Collection is organized using the following categories:

ADO.NET Code Samples Collection

Category

Items

Data Binding

MSDN Library

Binding to an ADO.NET DataSet Sample - http://msdn.microsoft.com/en-us/library/ms771774(VS.85).aspx

Data Models

Code Gallery

ADO.NET Entity Data Model Designer Extension Starter Kit - http://code.msdn.microsoft.com/DesignerExtStartKit/Wiki/View.aspx?title=Home&version=1

Project Riviera - http://code.msdn.microsoft.com/riviera

Microsoft Support

How to work with table relationships and entity inheritances in ADO.NET EDM - http://code.msdn.microsoft.com/KB977997

DataReader

MSDN Library

ADO.NET Sample Application - http://msdn.microsoft.com/en-us/library/dw70f090(VS.71).aspx

DataSet

MSDN Library

Binding to an ADO.NET DataSet Sample - http://msdn.microsoft.com/en-us/library/ms771774(VS.85).aspx

Consuming a DataSet from an XML Web Service - http://msdn.microsoft.com/en-us/library/s5xy331f(VS.71).aspx

DataSet and DataTable in ADO.NET 2.0 - http://msdn.microsoft.com/en-us/magazine/cc163709.aspx

DataTable

MSDN Library

DataSet and DataTable in ADO.NET 2.0 - http://msdn.microsoft.com/en-us/magazine/cc163709.aspx

Entity Framework

All-in-One Code Framework

EF4 CodeOnly Feature (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#829046

EF4 CodeOnly Feature (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#829050

EF4.0 Complex Type Objects (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786345

EF4.0 Complex Type Objects (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786372

EF4.0 Foreign Key Association (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786364

EF4.0 Foreign Key Association (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786387

EF4 Lazy Loading Feature (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1007360

EF4 Lazy Loading Feature (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1317759

EF4.0 Model First feature (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786820

EF4.0 Model First feature (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786824

Entity Data Model (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#761797

Entity Data Model (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#761780

Code Gallery

Entity Data Model Metadata Samples - http://code.msdn.microsoft.com/EdmMetadataSamples

Entity Framework 4.0 and WCF Data Services 4.0 in Visual Studio 2010 - http://code.msdn.microsoft.com/mag201004VSData

Entity Framework Documentation Samples - http://code.msdn.microsoft.com/EFDocSamples

Entity Framework Query Samples - http://code.msdn.microsoft.com/EFQuerySamples

Entity Framework Sample Provider - http://code.msdn.microsoft.com/EFSampleProvider

Hands-on-Lab: Using the Entity Framework in .NET 4 and Visual Studio 2010 - http://code.msdn.microsoft.com/EntityFxHOLPDC09

Sample EDMX Code Generator - http://code.msdn.microsoft.com/sampleedmxcodegen

Sample Entity Framework Provider for Oracle - http://code.msdn.microsoft.com/EFOracleProvider

SketchPad - http://code.msdn.microsoft.com/sketchpad

General

All-in-One Code Framework

Use ADO.NET in a C# application - http://1code.codeplex.com/SourceControl/changeset/view/55574#394619

Use ADO in a VB.NET application - http://1code.codeplex.com/SourceControl/changeset/view/55574#960683

Use ADO.NET in a C++ application - http://1code.codeplex.com/SourceControl/changeset/view/55574#394577

MSDN Library

.NET Framework Data Provider for ODBC - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_Odbc

,NET Framework Data Provider for OLE DB - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_OleDb

.NET Framework Data Provider for Oracle - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_OracleClient

AdventureWorks Sales Model - http://msdn.microsoft.com/en-us/library/bb387147.aspx

Course Manager Application - http://msdn.microsoft.com/en-us/library/ff595296.aspx

Human Resources Skills Application - http://msdn.microsoft.com/en-us/library/ee620621.aspx

Serializing Self-Tracking Entities - http://msdn.microsoft.com/en-us/library/ff595295.aspx

School Model - http://msdn.microsoft.com/en-us/library/bb896300.aspx

Typed ObjectQuery - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_QBM

LINQ to DataSet

MSDN Library

LINQ Samples Hub page - http://msdn.microsoft.com/en-us/library/bb397980.aspx#csharp

LINQ to Entities

MSDN Library

EntityClient data provider - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_EntityClient

LINQ Samples Hub page - http://msdn.microsoft.com/en-us/library/bb397980.aspx#csharp

LINQ to Entities - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_LINQ

LINQ to Objects

All-in-One Code Framework

Use LINQ to Objects in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#501157

Use LINQ to Objects in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#598174

LINQ to SQL

All-in-One Code Framework

Use LINQ to SQL in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#511053

Use LINQ to SQL in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#600266

Code Gallery

LINQ to SQL N-tier Smart Client - http://code.msdn.microsoft.com/linqntier

Code Gallery

An Example of a Multi Tier Architecture for LINQ to SQL - http://code.msdn.microsoft.com/multitierlinqtosql

LINQ Samples Hub page - http://msdn.microsoft.com/en-us/library/bb397980.aspx#csharp

LINQ to SQL - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_LINQ2SQL

LINQ to SQL N-tier Smart Client - http://code.msdn.microsoft.com/linqntier

SketchPad - http://code.msdn.microsoft.com/sketchpad

TPT Inheritance with LINQ to SQL - http://code.msdn.microsoft.com/TPT

N-Tier

Code Gallery

An Example of a Multi Tier Architecture for LINQ to SQL - http://code.msdn.microsoft.com/multitierlinqtosql

Building N-Tier Apps with EF4 - http://code.msdn.microsoft.com/mag200911EF4

LINQ to SQL N-tier Smart Client - http://code.msdn.microsoft.com/linqntier

O/RM Mapping

Code Gallery

Entity Framework Sample Provider - http://code.msdn.microsoft.com/EFSampleProvider

OData

Code Gallery

Silverlight Samples for OData Over SQL Azure with AppFabric Access Control - http://code.msdn.microsoft.com/SL3ODataSQLAzureACS

WCF Data Services Documentation Samples - http://code.msdn.microsoft.com/AstoriaDocSamples

POCO

Update POCO entity properties and relationships (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1317741

Update POCO entity properties and relationships (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1317759

Silverlight

Code Gallery

How to consume ADO.NET Data Services in Silverlight 3 - http://code.msdn.microsoft.com/KB982499

SQL Server

MSDN Library

.NET Framework Data Provider for SQL Server - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_SqlClient

Conserving Resources When Writing BLOB Values to SQL Server - http://msdn.microsoft.com/en-us/library/3517w44b(VS.71).aspx

Optimistic Concurrency - http://msdn.microsoft.com/en-us/library/aa0416cz(VS.71).aspx

Paging Through a Query Result - http://msdn.microsoft.com/en-us/library/tx1c9c2f(VS.71).aspx

Retrieving Identity or Autonumber Values - http://msdn.microsoft.com/en-us/library/ks9f57t0(VS.71).aspx

Streaming

Code Gallery

Streaming Photo Data Service Sample - http://code.msdn.microsoft.com/StreamingPhotoData/Wiki/View.aspx

WCF Data Services

All-in-One Code Framework

ADO.NET Data Service in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#659875

ADO.NET Data Service in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#659791

Use ADO.NET Data Service in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#659914

Use ADO.NET Data Service in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#659888

Use ADO.NET Data Service in Silverlight (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#825814

Use ADO.NET Data Service in Silverlight (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#825838

Code Gallery

Building an ADO.NET Data Services WPF Client - http://code.msdn.microsoft.com/astoriawpf/Release/ProjectReleases.aspx?ReleaseId=2083

How to consume ADO.NET Data Services in Silverlight 3 - http://code.msdn.microsoft.com/KB982499

How to create and then to call ADO.NET Data Services for different data sources - http://code.msdn.microsoft.com/KB982497

JSONP and URL-controlled format support for ADO.NET Data Services - http://code.msdn.microsoft.com/DataServicesJSONP

WCF Data Services Documentation Samples - http://code.msdn.microsoft.com/AstoriaDocSamples

本文链接

ASP.NET Code Samples Collection【转载】

2010-11-19T03:48:00Z

原文链接：http://blogs.msdn.com/b/jmeier/archive/2010/10/31/asp-net-code-samples-collection.aspx

ASP.NET Code Samples Collection

J.D. Meier

31 Oct 2010 3:31 PM

The ASP.NET Code Samples Collection is a roundup and map of ASP.NET code samples from various sources including the MSDN library, www.ASP.net, Code Gallery, CodePlex, and Microsoft Support.

You can add to the ASP.NET code examples collection by sharing in the comments or emailing me atFeedbackAndThoughts at live.com.

Common Categories for ASP.NET Code Samples
The ASP.NET Code Samples Collection is organized using the following categories:

ASP.NET Code Samples Collection

Category

Items

Sample Applications

Layered Architecture Sample

Tailspin Spyworks

ASP.NET MVC

Nerd Dinner

MVC Music Store

AJAX / jQuery

All-in-One Code Framework

ASP.NET AJAX Extender (C#)

ASP.Net Ajax ScriptControl (C#)

Code Gallery

AJAX pager

Ajax Paging for DataGrid

ASP.NET dropdownlist using ajax & VB

Building an AJAX Web Part for Microsoft Office Project Server 2007

Code for "New Features To Slice, Store, And Accelerate Your Web Applications”

CRM WCF Integration - Blogged at http://www.waelhamze.com

Fast, Scalable ASP.NET AJAX Content Proxy that Streams content

Improving WCF, AJAX, and ASP.NET Security and Performance

Joel Rumerman's Code Samples

Microsoft Visual Studio AJAX Profiling Extensions Power Tool

NHibernateAccessExtension

Paulo Morgado's Code Gallery

RegClientControls

Student Information using ASP.NET MVC 2.0 and AJAX

Web Application Toolkit for Bing Search

Microsoft Support

KB961864 - _pendingCallbacks[...].async' is null on ASP.NET 2.0 AJAX site

Authentication

Code Gallery

Fabrikam Jets - Integrating Codename "Dallas" with AppFabric Access Control

Remote Desktop Services Developer Resources

Token Authentication for ASP.NET

Customer Support

KB971831 - Allow token based authentication w/o transport or message encryption

Authorization

Code Gallery

Claims-Based Authorization with Windows Identity Foundation

Code for "Authorization In WCF-Based Services"

Enhanced authorization module for MCMS

FabrikamShipping

MSServices, HTTP Data Provider

Oragon Security

CSS 2

ASP.NET CSS Templates

Code for “New Features to Slice, Store and Accelerate your Web Applications

Devscribe

Web Widgets with .Net

Data Access

All-in-One Code Framework

ASP.NET custom data source for rdlc (C#)

Code Gallery

A sample of ASP.NET ObjectDataSource with Northwind database

All-In-One Code Framework (AIO)

An Example of a Multi Tier Architecture for Linq to Sql

ASP.NET Dynamic Data Preview

Building a LINQ Provider

Data Access in a SharePoint Web Part

Inserting Data into SQL Compact Edition Databases in Visual Studio

LINQ Entity Data Reader

MSDN Code Gallery Information and Discussion

Working with Microsoft Access Data in Visual Studio

Exception Management

Code Gallery

C# tested & easiest lines of code for send email with ASP.NET page

Code for "Error Handling in Workflows"

ElementaryExtensions Library

ESB Guidance WCF Error Handler

Exception Filter Inject - Provides C# dll/exe's with execption filter support

Exception Handler Info Generator - http://code.msdn.microsoft.com/ExceptionHandlerInfo

Exception handling

Fix Page Layout

Visual Studio Template for Microsoft Dynamics CRM Plug-ins

Windows Server 2008 R2

WinForm Exception Interceptor

XmlCleanupSoapExtension

Microsoft Support

KB893005 - Exception thrown in ErrorProvider constructor

KB899511 - System.NullReferenceException exceptions in .NET 1.1

KB913393 - Error when you specify a larger than 2 GB Content-Length HTTP header

KB917495 - OutOfMemoryException exception when you run a .NET 2.0 application

KB923028 - "Unhandled Error" when you run a .NET Framework 2.0 Remoting

KB930771 - Exception due to managed heap corruption

KB934839 - Exception when you browse .NET Framework 2.0 ASP.NET Web application

KB941132 - NullReferenceException exception when you use ShowDialog method

KB960096 - Error message when you try to add files to Source Code Control (SCC)

KB971169 - Exception When App_GlobalResource Has Culture Name Like zh-hant

KB975954 - AccessViolationException or a dead-lock occurs in .NET 2.0 based app

KB981119 - ScriptModule throws FIPS exception on Win 7

JavaScript / JSON

Code Gallery

Code for "New Features To Slice, Store, And Accelerate Your Web Applications”

CRM Silverlight Integration - Blogged at http://www.waelhamze.com

CRM WCF Integration - Blogged at http://www.waelhamze.com

JavaScript in SharePoint 2010

JavaScript snippet

JSON ASP.NET Sample

JSONP and URL-controlled format support for ADO.NET Data Services

KB958502 - JScript Editor support for “-vsdoc.js” IntelliSense doc. files

Live Framework

Microsoft Visual Studio AJAX Profiling Extensions Power Tool

SharePoint Javascript Utilities

Web Widgets with .Net

Logging and Instrumentation

patterns & practices

Implementing Intercepting Filter in ASP.NET Using HTTP Module

MVC

Code Gallery

Asynchronous support for ASP.NET MVC

How to: Implement Remote Validation from a Client in MVC

How to: Validate Model Data Using DataAnnotations Attributes

Mytrip.Mvc

System.Web.Mvc.Controller class

Using an Asynchronous Controller in ASP.NET MVC

Walkthrough: Adding ASP.NET AJAX Scripting to an MVC Project

Walkthrough: Creating a Basic MVC Project with Unit Tests in Visual Studio

Walkthrough: Organizing an ASP.NET MVC Application using Areas

Walkthrough: Using MVC View Templates with Data Scaffolding

Walkthrough: Using Templated Helpers to Display Data

Navigation

Codeplex

Navigation for ASP.NET Web Forms

Request Processing

ASP.NET Developer Center (www.ASP.NET)

HTTP Handlers and Factories

State / Session Management

Code Gallery

ASP.NET Session Monitor 1.0

Cutting Edge: The ASP.NET View State

Validation

Code Gallery

Validating Form Input Controls

How to: Implement Remote Validation from a Client in MVC

How to: Validate Model Data Using DataAnnotations Attributes

Visual Studio and ASP.NET Development

Code Gallery

Bootstrapper Manifest Generator

C# Micro Chess (Huo Chess)

Employee Info Starter Kit

Huo Chess - XNA Edition

Microsoft Solver Foundation - Express Edition

PowerCommands for Visual Studio 2008

Samples Environment for Microsoft Chart Controls

StickyNotes

Visual C# 2008 Samples

Visualization and Modeling SDK (DSL Tools) Lab

Microsoft Support

KB912019 - Error when you rebuild and view a Windows Form in Visual Studio 2005

KB915782 - InvalidCastException error in an ASP.NET-connected Web application

KB917952 - Error message when you try to install a ClickOnce application

KB918559 - Performance issues when debugging a Visual Studio 2005 C++ Project

KB926776 - A hotfix rollup package for 913297, 913393, 918995, and 924895

KB928208 - Compile and runtime issues for Visual Basic Macros

KB930198 - C2244 error after you install Visual Studio SP1

KB943969 - Visual Studio 2005 Slow Performance when you use IntelliSense feature

KB946040 - Error C2471: cannot update program database, Visual C++ 2008 project

KB946581 - Cumulative update for Visual Web Developer Express 2008

KB958502 - JScript Editor support for “-vsdoc.js” IntelliSense doc. files

本文链接

SQL Server修改表结构后批量更新所有视图

2010-09-14T02:44:00Z

最近修改了数据库表结构，数据同步的时候出了问题，发现很多数据明明已经修改，但是通过视图筛选出来的还是原来的数据，所以怀疑应该是视图缓存了数据，在园子里找到下面的博文，在这里做个记录备忘。

原文链接：http://www.cnblogs.com/yashen/archive/2004/12/23/81000.html

我们在使用SqlServer时经常遇到这种情况，当修改某个表的结构后，相关的视图就不对了而导致程序错误，因此就有个下面这个存储过程。

CREATE PROCEDURE RefreshAllView AS
DECLARE MyCursor CURSOR
FOR select Name from dbo.sysobjects where OBJECTPROPERTY(id, N'IsView') = 1 and (not name in ('sysconstraints','syssegments')) 

 
DECLARE @name varchar(40)
OPEN MyCursor

FETCH NEXT FROM MyCursor INTO @name
WHILE (@@fetch_status <> -1)
BEGIN
 IF (@@fetch_status <> -2)
 begin
 exec sp_refreshview @name
 end
 FETCH NEXT FROM MyCursor INTO @name
END

CLOSE MyCursor
DEALLOCATE MyCursor

本文链接

Improve your jQuery - 25 excellent tips[转载]

2010-08-26T03:30:00Z

Improve your jQuery - 25 excellent tips

14 Dec 2008 | Jon Hobbs-Smith

原文链接：http://www.tvidesign.co.uk/blog/improve-your-jquery-25-excellent-tips.aspx

本文所有版权及其他相关权利，均归原作者所有。

Introduction

jQuery is awesome. I've been using it for about a year now and although I was impressed to begin with I'm liking it more and more the longer I use it and the more I find out about it's inner workings.

I'm no jQuery expert. I don't claim to be, so if there are mistakes in this article then feel free to correct me or make suggestions for improvements.

I'd call myself an "intermediate" jQuery user and I thought some others out there could benefit from all the little tips, tricks and techniques I've learned over the past year. The article also ended up being a lot longer than I thought it was going to be so I'll start with a table of contents so you can skip to the bits you're interested in.

Table of Contents

1. Load the framework from Google Code
2. Use a cheat sheet
3. Combine all your scripts and minify them
4. Use Firebug's excellent console logging facilities
5. Keep selection operations to a minimum by caching
6. Keep DOM manipulation to a minimum
7. Wrap everything in a single element when doing any kind of DOM insertion
8. Use IDs instead of classes wherever possible
9. Give your selectors a context
10. Use chaining properly
11. Learn to use animate properly
12. Learn about event delegation
13. Use classes to store state
14. Even better, use jQuery's internal data() method to store state
15. Write your own selectors
16. Streamline your HTML and modify it once the page has loaded
17. Lazy load content for speed and SEO benefits
18. Use jQuery's utility functions
19. Use noconflict to rename the jquery object when using other frameworks
20. How to tell when images have loaded
21. Always use the latest version
22. How to check if an element exists
23. Add a JS class to your HTML attribute
24. Return 'false' to prevent default behaviour
25. Shorthand for the ready event

1. Load the framework from Google Code

Google have been hosting several JavaScript libraries for a while now on Google Code and there are several advantages to loading it from them instead of from your server. It saves on bandwidth, it'll load very quickly from Google's CDN and most importantly it'll already be cached if the user has visited a site which delivers it from Google Code.

This makes a lot of sense. How many sites out there are serving up identical copies of jQuery that aren't getting cached? It's easy to do too...

<script src="http://www.google.com/jsapi"></script>
<script type="text/javascript">

    // Load jQuery
    google.load("jquery", "1.2.6");

    google.setOnLoadCallback(function() {
        // Your code goes here.
    });
       
</script>

Or, you can just include a direct reference like this...

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js" type="text/javascript"></script>

Full instructions here

2. Use a cheat sheet

Not just a jQuery tip, there are some great cheat sheets out there for most languages. It's handy having every function on a printable A4 sheet for reference and luckily these guys have produced a couple of nice ones..

http://www.gscottolson.com/weblog/2008/01/11/jquery-cheat-sheet/
http://colorcharge.com/jquery/

3. Combine all your scripts and minify them

OK, a general JavaScript tip here. But any big project that uses lots of jQuery probably uses lots of plugins (this site uses easing, localScroll, lightbox and preload) so it's usually applicable.

Browsers can't load scripts concurrently (well, most can't, yet), which means that if you've got several scripts downloading one at a time then you're really slowing down the loading of your page. So, assuming the scrips are being loaded on every page then you should consider combining them into one long script before deploying.

Some of the plugins will already be minified, but you should consider packing your scripts and any that aren't already. It only takes a few seconds. I'm personally a fan of Packer by Dean Edwards

4. Use Firebug's excellent console logging facilities

If you haven't already installed Firebug then you really should. Aside from many other useful features such as allowing you to inspect http traffic and find problems with your CSS it has excellent logging commands that allow you to easily debug your scripts.

Here's a full explanation of all of it's features

My favourite features are "console.info", which you can use to just dump messages and variables to the screen without having to use alert boxes and "console.time" which allows you to easily set up a timer to wrap a bunch of code and see how long it takes. They're all really easy to use too...

console.time('create list');

for (i = 0; i < 1000; i++) {
    var myList = $('.myList');
    myList.append('This is list item ' + i);
}

console.timeEnd('create list');

In this instance I've deliberately written some very inefficient code! In the next few tips I'll show you how we can use the timer to show some improvements which can be made.

5. Keep selection operations to a minimum by caching

jQuery selectors are awesome. They make selecting any element on the page incredibly simple, but internally they have to do a fair amount of work and if you go mad with them you might find things starting to get pretty slow.

If you're selecting the same element time and time again (in a loop for example) then you can just select it once and keep it in memory while you manipulate it to your heart's content. Take the following example where we add items to an unordered list using a loop.

for (i = 0; i < 1000; i++) {
    var myList = $('.myList');
    myList.append('This is list item ' + i);
}

That takes 1066 milliseconds on my PC in Firefox 3 (imagine how long it would IE6!), which is pretty slow in JavaScript terms. Now take a look at the following code where we use the selector just once.

var myList = $('.myList');

for (i = 0; i < 1000; i++) {
    myList.append('This is list item ' + i);
}

That only takes 224 milliseconds, more than 4x faster, just by moving one line of code.

6. Keep DOM manipulation to a minimum

We can make the code from the previous tip even faster by cutting down on the number of times we insert into the DOM. DOM insertion operations like .append() .prepend() .after() and .wrap() are relatively costly and performing lots of them can really slow things down.

All we need to do is use string concatenation to build the list and then use a single function to add them to your unordered list like .html() is much quicker. Take the following example...

var myList = $('#myList');

for (i=0; i<1000; i++){
    myList.append('This is list item ' + i);
}

On my PC that takes 216 milliseconds , just over a 1/5th of a second, but if we build the list items as a string first and use the HTML method to do the insert, like this....

var myList = $('.myList');
var myListItems = '';

for (i = 0; i < 1000; i++) {
    myListItems += '<li>This is list item ' + i + '</li>';
}

myList.html(myListItems);

That takes 185 milliseconds, not much quicker but that's another 31 milliseconds off the time.

7. Wrap everything in a single element when doing any kind of DOM insertion

OK, don't ask me why this one works (I'm sure a more experienced coder will explain).

In our last example we inserted 1000 list items into an unordered list using the .html() method. If we had have wrapped them in the UL tag before doing the insert and inserted the completed UL into another tag (a DIV) then we're effectively only inserting 1 tag, not 1000, which seems to be much quicker. Like this...

var myList = $('.myList');
var myListItems = '<ul>';

for (i = 0; i < 1000; i++) {
    myListItems += '<li>This is list item ' + i + '</li>';
}

myListItems += '</ul>';
myList.html(myListItems);

The time is now only 19 milliseconds, a massive improvement, 50x faster than our first example.

8. Use IDs instead of classes wherever possible

jQuery makes selecting DOM elements using classes as easy as selecting elements by ID used to be, so it's tempting to use classes much more liberally than before. It's still much better to select by ID though because jQuery uses the browser's native method (getElementByID) to do this and doesn't have to do any of it's own DOM traversal, which is much faster. How much faster? Let's find out.

I'll use the previous example and adapt it so each LI we create has a unique class added to it. Then I'll loop through and select each one once.

// Create our list
var myList = $('.myList');
var myListItems = '<ul>';

for (i = 0; i < 1000; i++) {
    myListItems += '<li >This is a list item</li>';
}

myListItems += '</ul>';
myList.html(myListItems);

// Select each item once
for (i = 0; i < 1000; i++) {
    var selectedItem = $('.listItem' + i);
}

Just as I thought my browser had hung, it finished, in 5066 milliseconds (over 5 seconds). So i modified the code to give each item an ID instead of a class and then selected them using the ID.

// Create our list
var myList = $('.myList');
var myListItems = '<ul>';

for (i = 0; i < 1000; i++) {
    myListItems += '<li id="listItem' + i + '">This is a list item</li>';
}

myListItems += '</ul>';
myList.html(myListItems);

// Select each item once
for (i = 0; i < 1000; i++) {
    var selectedItem = $('#listItem' + i);
}

This time it only took 61 milliseconds. Nearly 100x faster.

9. Give your selectors a context

By default, when you use a selector such as $('.myDiv') the whole of the DOM will be traversed, which depending on the page could be expensive.

The jQuery function takes a second parameter when performing a selection.

jQuery( expression, context )

By providing a context to the selector, you give it an element to start searching within so that it doesn't have to traverse the whole of the DOM.

To demonstrate this, let's take the first block of code from the tip above. It creates an unordered list with 1000 items, each with an individual class. It then loops through and selects each item once. You'll remember that when selecting by class it took just over 5 seconds to select all 1000 of them using this selector.

var selectedItem = $('#listItem' + i);

I then added a context so that it was only running the selector inside the unordered list, like this...

var selectedItem = $('#listItem' + i, $('.myList'));

It still took 3818 milliseconds because it's still horribly inefficient, but that's more than a 25% speed increase by making a small modification to a selector.

10. Use chaining properly

One of the coolest things about jQuery is it's ability to chain method calls together. So, for example, if you want to switch the class on an element.

$('myDiv').removeClass('off').addClass('on');

If you're anything like me then you probably learned that in your first 5 minutes of reading about jQuery but it goes further than that. Firstly, it still works across line breaks (because jQuery = JavaScript), which means you can write neat code like this...

$('#mypanel')
    .find('TABLE .firstCol')
    .removeClass('.firstCol')
    .css('background' : 'red')
    .append('<span>This cell is now red</span>');

Making a habit of using chaining automatically helps you to cut down on your selector use too.

But it goes further than that. Let's say that you want to perform several functions on an element but one of the first functions changes the element in some way, like this...

$('#myTable').find('.firstColumn').css('background','red');

We've selected a table, drilled down to find cells with a class of "firstColumn" and coloured them in red.

Let's say we now want to colour all the cells with a class of "lastColumn" blue. Because we've used the find() funciton we've filtered out all the cells that don't have a class of "firstColumn" so we need to use the selector again to get the table element and we can't continue chaining, right? Luckily jQuery has an end() function which actually reverts back to the previous unaltered selection so you can carry on chaining, like this...

$('#myTable')
    .find('.firstColumn')
        .css('background','red')
    .end()
    .find('.lastColumn')
        .css('background','blue');

It's also easier than you might think to write your own jQuery function which can chain. All you have to do is write a function which modifies an element and returns it.

$.fn.makeRed = function() {
    return $(this).css('background', 'red');
}

$('#myTable').find('.firstColumn').makeRed().append('hello');

How easy was that?

11. Learn to use animate properly

When I first started using jQuery I loved the fact that it was easy to use the pre-defined animations like slideDown() and fadeIn() to get some really cool effects incredibly easy. It's easy to take things further though because jQuery's animate() method is very easy to use and very powerful. In fact, is you look at the jQuery source code you'll see that internally those methods are just shortcuts which use the animate() function.

slideDown: function(speed,callback){
    return this.animate({height: "show"}, speed, callback);
},

fadeIn: function(speed, callback){
    return this.animate({opacity: "show"}, speed, callback);
}

The animate() method simply takes any CSS style and smoothly transitions it from one value to another. So, you can change the width, height, opacity, background-color, top, left, margin, color, font-size, anything you want.

This is how easy it is to animate all your menu items grow to 100 pixels high when you roll over them.

$('#myList li').mouseover(function() {
    $(this).animate({"height": 100}, "slow");
});

Unlike other jQuery functions, animations are automatically queued, so if you want to run a second animation once the first is finished then just call the animate method twice, no callback necessary.

$('#myBox').mouseover(function() {
    $(this).animate({ "width": 200 }, "slow");
    $(this).animate({"height": 200}, "slow");
});

If you want the animations to happen concurrently then just put both styles in the params object of a single call, like this...

$('#myBox').mouseover(function() {
    $(this).animate({ "width": 200, "height": 200 }, "slow");
});

You can animate any property that's numeric. You can also download plugins to help you animate properties that aren't, like colors and background colors

12. Learn about event delegation

jQuery makes it easier than ever to attach events to elements in the DOM unobtrusively, which is great, but adding too many events is inefficient. Event delegation allows you to add less events to achieve the same result in many situations. The best way to illustrate this is with an example...

$('#myTable TD').click(function(){
    $(this).css('background', 'red');
});

A simple function which turns cells in a table red when you click on them. Let's say that you've got a grid with 10 columns and 50 rows though, that's 500 events bound. Wouldn't it be neater if we could just attach a single event to the table and when the table is clicked have the event handler work out which cell was clicked before turning it red?

Well that's exactly what event delegation is and it's easy to implement...

$('#myTable').click(function(e) {
    var clicked = $(e.target);
    clicked.css('background', 'red');
});

'e' contains information about the event, including the target element that actually received the click. All we have to do is inspect it to see which cell was actually clicked. Much neater.

Event delegation has another benefit. Normally, When you bind a handler to a collection of elements it gets attached to those elements and those elements only. If you add new elements to the DOM which would have been matched by the selector then they don't have the event handler bound to them (are you following me?) then nothing will happen.

When using event delegation you can add as many matching elements to the DOM as you like after the event is bound and they work too.

13. Use classes to store state

This is the most basic way of storing information about a block of html. jQuery is great at manipulating elements based upon their classes, so if you need to store information about the state of an element then why not add an extra class to store it?

Here's an example. We want to create an expanding menu. When you click the button we want the panel to slideDown() if it's currently closed, or slideUp() if it's currently open. We'll start with the HTML

<div >
    <div >
        click me
    </div>
    <div >
        <ul>
            <li>Menu item 1</li>
            <li>Menu item 2</li>
            <li>Menu item 3</li>
        </ul>
    </div>
</div>

Very simple! We've just added an extra class to the wrapper div which serves no other purpose other than to tell us the state of the item. So all we need is a click event handler which performs slideUp() or slideDown() on the corresponding panel when the button is clicked.

$('.button').click(function() {

    var menuItem = $(this).parent();
    var panel = menuItem.find('.panel');

    if (menuItem.hasClass("expanded")) {
        menuItem.removeClass('expanded').addClass('collapsed');
        panel.slideUp();
    }
    else if (menuItem.hasClass("collapsed")) {
        menuItem.removeClass('collapsed').addClass('expanded');
        panel.slideDown();
    }
});

That's a very simple example, but you can add extra classes for storing all sorts of information about an element or HTML fragment.

However, in all but simple cases it's probably better to use the next tip.

14. Even better, use jQuery's internal data() method to store state

It's not very well documented for some reason but jQuery has an internal data() method which can be used to store information in key/value pairs against any DOM element. Storing a piece of data is as simple as this...

$('#myDiv').data('currentState', 'off');

We can amend the example from the previous tip. We'll use the same HTML (with the "expanded" class removed) and use the data() function instead.

$('.button').click(function() {

    var menuItem = $(this).parent();
    var panel = menuItem.find('.panel');

    if (menuItem.data('collapsed')) {
        menuItem.data('collapsed', false);
        panel.slideDown();  
    }
    else {
        menuItem.data('collapsed', true);
        panel.slideUp();
    }
});

I'm sure you'll agree this is much neater. For more information about data() and removeData(), see this page...

jQuery internals

15. Write your own selectors

jQuery has loads of built-in selectors for selecting elements by ID, class, tag, attribute and many more. But what do you do when you need to select elements based upon something else and jQuery doesn't have a selector?

Well, one answer would be to add classes to the elements from the start and use those to select them, but it turns out that it's not hard to extend jQuery to add new selectors.

The best way to demonstrate is with an example.

$.extend($.expr[':'], {
    over100pixels: function(a) {
        return $(a).height() > 100;
    }
});

$('.box:over100pixels').click(function() {
    alert('The element you clicked is over 100 pixels high');
});

The first block of code creates a custom selector which finds any element that is more than 100 pixels tall. The second block just uses it to add a click handler to all those elements.

I won't go into any more detail here but you can imagine how powerful this is and if you search google for "custom jquery selector" you'll find loads of great examples.

16. Streamline your HTML and modify it once the page has loaded

The title might not make a lot of sense but this tip can potentially neaten up your code, reduce the weight and download time of your page and help your SEO. Take the following HTML for example...

<div >
    <div >
        <div >This is field number 1</div>
    </div>
    <div >
        <div ><img src="icon.png" alt="icon" /></div>
        <div ><span>This is an error message</span></div>
    </div>
</div>
<div >
    <div >
        <div >This is field number 2</div>
    </div>
    <div >
        <div ><img src="icon.png" alt="icon" /></div>
        <div ><span>This is an error message</span></div>
    </div>
</div>

That's an example of how a form might be marked up, modified slightly for illustrative purposes. I'm sure you'll agree it's pretty ugly and if you had a long form you'd end up with a fairly long ugly page. It's be nicer if you could just put this in your HTML.

<div >This is field 1</div>
<div >This is field 2</div>
<div >This is field 3</div>
<div >This is field 4</div>
<div >This is field 5</div>

All you have to do is a bit of jQuery manipulation to add all the ugly HTML back in. Like this...

$(document).ready(function() {
    $('.field').before('<div ><div >');
    $('.field').after('</div><div ><div >
        <img src="icon.png" alt="icon" /></div><div >
        <span>This is an error message</span></div></div></div>');
});

It's not always advisable to do this, you'll get a bit of a flash as the page loads, but in certain situations where you've got a lot of repeated HTML it can really reduce your page weight and the SEO benefits of reducing all your repeated extraneous markup should be obvious.

17. Lazy load content for speed and SEO benefits

Another way to speed up your page loads and neaten up the HTML that search spiders see is to lazy load whole chunks of it using an AJAX request after the rest of the page has loaded. The user can get browsing right away and spiders only see the content you want them to index.

We've used this technique on our own site. Those purple buttons at the top of the page drop down 3 forms, directions and a google map, which was doubling the size of our pages. So, we just put all that HTML in a static page and use the load() function to load it in once the DOM was ready. Like this...

$('#forms').load('content/headerForms.html', function() {
    // Code here runs once the content has loaded
    // Put all your event handlers etc. here.            
});

I wouldn't use this everywhere. You have to consider the trade offs here. You're making extra requests to the server and portions of your page might not be available to the user right away, but used correctly it can be a great optimization technique.

18. Use jQuery's utility functions

jQuery isn't just about flash effects. The creator has exposed some really useful methods which fill a few gaps in JavaScript's repertoire.

http://docs.jquery.com/Utilities

In particular, browser support for certain common array functions is patchy (IE7 doesn't even have an indexOf() method!). Jquery has methods for iterating, filtering, cloning, merging and removing duplicates from Arrays.

Other common functions that are difficult in Javascript include getting the selected item in a drop down list. In plain old JavaScript you'd have to get the <select> element using getElementByID, get the child elements as an array and iterate through them checking whether each one was selected or not. jQuery makes it easy...

$('#selectList').val();

It's worth spending some time looking through the jQuery documentation on the main site and having a nose around some of the lesser known functions.

19. Use noconflict to rename the jquery object when using other frameworks

Most javascript frameworks make use of the $ symbol as a shorthand and this can cause clashes when trying to use more than one framework on the same page. Luckily there's a simple solution. The .noconflict() function gives control of the $ back and allows you to set your own variable name, like this...

var $j = jQuery.noConflict();
$j('#myDiv').hide();

20. How to tell when images have loaded

This is another one of those problems that doesn't seem to be as well documented as it should be (not when I went looking anyway) and it's a fairly common requirement when building photo galleries, carousels etc, but it's fairly easy.

All you have to do is use the .load() method on an IMG element and put a callback function in it. The following example changes the "src" attribute of an image tag to load a new image and attaches a simple load function.

$('#myImage').attr('src', 'image.jpg').load(function() {
    alert('Image Loaded');
});

You should find that the alert is called as soon as the image is loaded.

21. Always use the latest version

jQuery is constantly improving and John Resig, it's creator, always seems to be in search of ways to improve performance.

jQuery is currently on version 1.2.6 but John has already revealed that he's working on a new selector engine called Sizzle, which may apparently improve selector speeds in Firefox by up to 4x. So, it pays to keep up to date.

22. How to check if an element exists

You don't need to check if an element exists on the page before you manipulate it because jQuery will will simply do nothing if you try to select something and it isn't in the DOM. But when you do need to check if anything has been selected, or how many items have been selected you can use the length property.

if ($('#myDiv).length) {
    // your code
}

Simple, but not obvious.

23. Add a JS class to your HTML attribute

I learned this tip from Karl Swedberg whose excellent books I used to learn jQuery.

He recently left a comment on one of my previous articles about this technique and the basics are as follows...

Firstly, as soon as jQuery has loaded you use it to add a "JS" class to your HTML tag.

$('HTML').addClass('JS');

Because that only happens when javascript is enabled you can use it to add CSS styles which only work if the user has JavaScript switched on, like this...

.JS #myDiv{display:none;}

So, what this means is that we can hide content when JavaScript is switched on and then use jQuery to show it when necessary (e.g. by collapsing some panels and expanding them when the user clicks on them), while those with JavaScript off (and search engine spiders) see all of the content as it's not hidden. I'll be using this one a lot in the future.

To read his full article click here.

24. Return 'false' to prevent default behaviour

This should be an obvious one but maybe not. if you have a habit of doing this...

<a href="#" >Click me!</a>

... and then attaching an event handler like this...

$('popup').click(function(){
    // Launch popup code
});

... it'll probably work fine until you use it on a long page, at which point you'll notice that the # is causing it to jump to the top of the page when your click event is triggered.

All you have to do to prevent this default behaviour, or indeed any default behaviour on any event handler is to add "return false;" to your handler, like this...

$('popup').click(function(){
    // Launch popup code
    return false;
});

25. Shorthand for the ready event

A small tip this one but you can save a few characters by using shorthand for the $(document).ready function.

Instead of this...

$(document).ready(function (){
    // your code
});

You can do this...

$(function (){
    // your code
});

本文链接

IIS7.0通过FastCGI方式运行PHP遇到的一些问题及解决方法

2010-04-26T16:04:00Z

经过二天的努力，终于把PHP网站从Apache迁移到IIS7上面，迁移过程中遇到一些问题，在这里和大家分享一下。至今仍有一个问题，希望大家帮忙指点。

本文不会涉及如下内容：

IIS7的安装
FastCGI For IIS7.0的安装和配置
UrlScan的安装和配置
如何配置IIS7.0来运行PHP
为什么要把PHP网站从Apache迁移到IIS7上面

如果您想了解上面的内容，你可以到http://www.iis.net和http://www.php.net网站查看相关内容，在搜索引擎中也能找到很多参考资料。

在IIS7.0上以FastCGI方式配置好PHP运行环境，测试可以正常运行PHP程序后，将PHP程序部署上去，导入程序原来的数据和配置信息。由于Apache服务器在占用80端口，所以先停止Apache并设置IIS7.0使用80端口运行网站。 PHP程序终于在IIS7.0上跑起来了，看起来还不错，哈哈……

不过好像高兴的太早，很快就有问题出来啦L

一、某些图片无法显示

我的同事发现有不少图片无法显示。我感觉很奇怪，既然在Apache上没有问题，迁移到IIS7.0后，域名和文件路径均没有变化，不应该出现问题呀。我马上开始确认和排查问题，首先，根据同事的提供信息查看页面，果然很多图片无法显示；然后，我就随机看了网站中的图片，发现有些图片可以正常显示，而且不能正常显示的图片，都是路径中包含了日文或中文字符，这是为什么呢？？？

疯狂的折腾了一通之后，还是没有头绪，没有办法只能重新再浏览器中打开一张图片，希望可以从错误信息中找到一些有用的东西，只有404 File Not Found错误，没有其他有价值的参考信息。这时候我远程连接到服务器，在服务器上访问，哈哈……错误信息就比较详细了，如下图：

OMG，是UrlScan拒绝了该请求，在UrlScan的日志目录C:\Windows\System32\inetsrv\urlscan\logs\中打开一个日志文件，发现很多类似 "Rejected URL+contains+high+bit+character URL"的记录，这又是为什么呢？？？原来IIS7.0上安装UrlScan后，所有的请求都会经过aspnet_filter和Request Filtering的过滤，Request Filtering的过滤规则就在UrlScan的安装目录C:\Windows\System32\inetsrv\urlscan\UrlScan.ini文件中，其中有这样一个规则AllowHighBitCharacters=0，IIS官网的解释是： This feature either allows or rejects all requests to IIS 7 that contain non-ASCII characters and logs the error code 404.12，允许或拒绝所有包含非ASCII字符的请求并在日志中记录404.12错误，该规则默认为0，也就拒绝包含高位字符的请求 URL。我们将AllowHighBitCharacters的值改为1，图片终于可以正常显示了。

关于AllowHighBitCharacters的配置，UrlScan.ini中配置的规则是整个机器级别的，IIS7.0上的所有网站都适用。根据IIS官网的说明，还可以在网站级别配置。在IIS管理器中，你可以在左侧选择指定的网站后，在中间的功能区域选择"Request Filtering"，双击该功能，在右侧的操作区域中点击"Edit Feature Settings"后，选中或者取消"allow high-bit characters"项即可；也可以直接在网站的web.config中添加如下内容：

但是，根据我的测试，如果在UrlScan.ini中配置AllowHighBitCharacters=0，那么在网站级别按照上面在web.config中配置AllowHighBitCharacters="true"，根本就不起作用，IIS7.0依然拒绝处理路径中含有非ASCII字符的请求；如果在UrlScan.ini中配置AllowHighBitCharacters=1，那么在网站级别按照上面在web.config中配置AllowHighBitCharacters="true|false"就会起作用。

这又是为什么呢？希望有高手指点一下。

二、很多基于JQuery的功能失效了

日期选择框失效了，弹出层失效了，输入验证失效了……可是，这又是为什么呢？

还好吃一堑长一智，这次直接去看UrlScan的日志，发现加载JS的记录很多都是" Rejected URL+contains+dot+in+path URL"，然后就去看UrlScan.ini中的配置，在AllowHighBitCharacters下面有一个AllowDotInPath的配置，默认值也是0，也就是不允许在Url中出现除了扩展名之外的点字符[.]，大家知道JQuery库和很多扩展插件的文件名称中都有点字符[.]，将AllowDotInPath的值修改为1，打开网站就没有问题了，哈哈：）

注意：UrlScan.ini中关于AllowDotInPath的说明，除了测试外不建议将其设置为1，因为如果设置1，基于扩展名的检查将不在可信。

这二个问题解决后，从Apache迁移PHP程序到IIS7.0也算完成了。

最后，还有一个问题，就是我们的php网站在IIS7.0上运行，访问的时候，偶尔会有页面空白的情况发生，等一段时间就好了，直接回收或者重启进程池后也会好，不知道是什么问题？希望有了解此问题的园友，不吝赐教，给些指点，先在此谢过！

说明：这个问题已经解决，具体的操作就是减小http连接时间，同时增加应用程序池中的最大连接数和并发连接数。

参考:

本文链接

Microsoft FTP7.5 For IIS7.x使用中的一些问题及解决方法

2010-04-25T16:41:00Z

最近在IIS7.0上安装了Microsoft FTP7.5，但是使用FTP7.5的过程中，却遇到不少问题，在网上找到有用资料不多，经过一个下午的摸索，在这里分享出来，希望可以帮助那些在使用Microsoft FTP7.5时遇到类似问题的朋友。

本文仅仅说明Microsoft FTP7.5 For IIS7.x的设置问题，包括ftp站点建立和设置、用户权限设置等等。

本文内容不会涉及如下内容：

其他可替代Microsoft FTP7.5功能软件的安装与使用
如何创建Windows用户和组
如何安装IIS7.x
如何安装Microsoft FTP7.5 For IIS7.x
如何设置和使用Microsoft FTP7.5的SSL功能
如何设置和使用Microsoft FTP7.5的用户隔离功能

如果你希望了解以上内容，可以参考http://www.iis.net/和微软网站的相关说明。

我要实现的目标：

在系统中创建FTP Users用户组，并在该用户组下创建bimoo、bimooftp二个用户。

用户bimoo可以查看整个FTP站点的内容列表，同时拥有该站点中的子应用程序upload的读写权限，但不能查看和读写子应用程序upload以外的任何内容；bimooftp拥有整个站点的读写权限。

我们首先按照正确的方式操作一遍，文章最后会列出使用过程中遇到的一些问题。

打开IIS管理器，右键点击"服务器名称"或"网站"节点，选择"Add FTP Site"，如下图：

然后输入FTP 网站名称，选择内容目录的物理路径，点击"下一步"按钮，弹出如下窗口：

不要选中上面的"Enable Virtual Host Name"项，如果选中，建立网站后，使用FTP客户端连接，会出现如下错误：

SSL可以根据实际情况设置，这里选择"Allow SSL"，然后点击"下一步"按钮，弹出如下窗口：

这里启用Basic认证[Authentication]类型，在授权[Authorization]选项中选择允许"指定用户[Specified Users]"访问，并输入用户名，多个用户名使用逗号[,]，选择相应的权限[Permissions]后，点击"完成"按钮。然后想这个FTP站点中添加二个"应用程序"或"虚拟目录"，这时候一个FTP站点就建立好了。

我这里建立的FTP站点名称是"ftp_server"，其中有sites和upload二个应用程序，大致结构如下图所示：

下面开始说一下用户授权的问题，我这里不允许匿名用户访问，所以我在站点的"FTP Authentication"中启用"Basic Authentication"认证类型，禁用了"Anonymous Authentication"。然后在"FTP Authorization Rules"中添加授权规则，如下图：

给ftp_server中的应用程序sites中的"FTP Authorization Rules"中添加授权规则，如下图：

给ftp_server中的应用程序upload中的"FTP Authorization Rules"中添加授权规则，如下图：

说明：由于这里用户bimooftp和bimoo都隶属FTP Users用户组，而且他们都具有Read,Write权限，所以也可以直接给用户组FTP Users设置规则。另外，子应用程序和虚拟目录会自动继承整个FTP站点的授权规则，这里我删除了继承来的规则，添加自己的规则。

还有一个问题，在站点的"FTP Directory Browsing"中，"Directory Listing Style"中一定选择"MS-DOS"，如果选择"UNIX"，那么使用ftp客户端连接时，无法列出目录和文件列表。如下图：

OK，如果您安装上面的步骤做完，那么就应该实现目标了，用户bimoo可以读写upload应用程序，可以查看整个FTP站点的内容列表，但是却不能查看或读写sites应用程序的内容；bimooftp用户拥有这个站点的查看和读写权限。现在使用FTP客户端试一下吧。

下面开始说一下我安装过程中遇到的问题：

用户授权不当

刚开始对用户进行授权的时候，给用户bimooftp授予整个FTP站点的读写权限，没有给用户bimoo授予任何权限；然后给用户bimoo授予FTP站点子应用程序sites的读写权限。此时用户bimooftp可以连接ftp站点，但用户bimoo连接子应用程序sites时，却出现下面的错误：

解决方法：

在FTP站点级别授予用户bimoo读权限。如果希望把虚拟目录或者子应用程序授权给用户，必须保证给用户对其父目录或站点至少拥有读权限。
FTP站点绑定域名

如果给FTP站点绑定域名，比如ftp://ftp.bmshops.com，那么就会出现下面的错误：

解决方法：

不要给FTP站点绑定域名，主机头留空即可。这样就不能建立多个FTP站点，不知道有没有更好的方法解决这个问题。

后来在IIS的官方网站中的一篇文章中找到答案，文章地址如下：

http://learn.iis.net/page.aspx/320/using-ftp-virtual-host-names/

由于FTP7.5提供了类似Web站点功能的虚拟主机[Virtual Host]功能，多个FTP站点都可以使用21端口和相同的IP地址，所以在访问FTP站点的时候，用户名需要使用VirtualHost|UserName的形式，否则就会发生"503 Valid hostname is expected"错误。

这样就解决了FTP站点绑定域名和建立多个FTP站点的问题，哈哈：）
FTP站点设置不当

刚开始由于设置不当，导致FTP客户端连接可以成功，但是无法列出目录和文件。后来网搜了一下，大部分都说将FTP客户端的数据连接类型改为被动模式[PASV Mode]，但还是不行。后来发现，在FTP服务器端把Directory Listing Style设置成了UNIX，设置为MS-DOS后解决。

参考：

基本就写这些吧，欢迎大家指点、拍砖，来者不拒！

本文链接

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Category	Items
Data Binding	MSDN Library Binding to an ADO.NET DataSet Sample - http://msdn.microsoft.com/en-us/library/ms771774(VS.85).aspx
Data Models	Code Gallery ADO.NET Entity Data Model Designer Extension Starter Kit - http://code.msdn.microsoft.com/DesignerExtStartKit/Wiki/View.aspx?title=Home&version=1 Project Riviera - http://code.msdn.microsoft.com/riviera Microsoft Support How to work with table relationships and entity inheritances in ADO.NET EDM - http://code.msdn.microsoft.com/KB977997
DataReader	MSDN Library ADO.NET Sample Application - http://msdn.microsoft.com/en-us/library/dw70f090(VS.71).aspx
DataSet	MSDN Library Binding to an ADO.NET DataSet Sample - http://msdn.microsoft.com/en-us/library/ms771774(VS.85).aspx Consuming a DataSet from an XML Web Service - http://msdn.microsoft.com/en-us/library/s5xy331f(VS.71).aspx DataSet and DataTable in ADO.NET 2.0 - http://msdn.microsoft.com/en-us/magazine/cc163709.aspx
DataTable	MSDN Library DataSet and DataTable in ADO.NET 2.0 - http://msdn.microsoft.com/en-us/magazine/cc163709.aspx
Entity Framework	All-in-One Code Framework EF4 CodeOnly Feature (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#829046 EF4 CodeOnly Feature (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#829050 EF4.0 Complex Type Objects (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786345 EF4.0 Complex Type Objects (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786372 EF4.0 Foreign Key Association (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786364 EF4.0 Foreign Key Association (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786387 EF4 Lazy Loading Feature (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1007360 EF4 Lazy Loading Feature (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1317759 EF4.0 Model First feature (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786820 EF4.0 Model First feature (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#786824 Entity Data Model (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#761797 Entity Data Model (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#761780 Code Gallery Entity Data Model Metadata Samples - http://code.msdn.microsoft.com/EdmMetadataSamples Entity Framework 4.0 and WCF Data Services 4.0 in Visual Studio 2010 - http://code.msdn.microsoft.com/mag201004VSData Entity Framework Documentation Samples - http://code.msdn.microsoft.com/EFDocSamples Entity Framework Query Samples - http://code.msdn.microsoft.com/EFQuerySamples Entity Framework Sample Provider - http://code.msdn.microsoft.com/EFSampleProvider Hands-on-Lab: Using the Entity Framework in .NET 4 and Visual Studio 2010 - http://code.msdn.microsoft.com/EntityFxHOLPDC09 Sample EDMX Code Generator - http://code.msdn.microsoft.com/sampleedmxcodegen Sample Entity Framework Provider for Oracle - http://code.msdn.microsoft.com/EFOracleProvider SketchPad - http://code.msdn.microsoft.com/sketchpad
General	All-in-One Code Framework Use ADO.NET in a C# application - http://1code.codeplex.com/SourceControl/changeset/view/55574#394619 Use ADO in a VB.NET application - http://1code.codeplex.com/SourceControl/changeset/view/55574#960683 Use ADO.NET in a C++ application - http://1code.codeplex.com/SourceControl/changeset/view/55574#394577 MSDN Library .NET Framework Data Provider for ODBC - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_Odbc ,NET Framework Data Provider for OLE DB - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_OleDb .NET Framework Data Provider for Oracle - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_OracleClient AdventureWorks Sales Model - http://msdn.microsoft.com/en-us/library/bb387147.aspx Course Manager Application - http://msdn.microsoft.com/en-us/library/ff595296.aspx Human Resources Skills Application - http://msdn.microsoft.com/en-us/library/ee620621.aspx Serializing Self-Tracking Entities - http://msdn.microsoft.com/en-us/library/ff595295.aspx School Model - http://msdn.microsoft.com/en-us/library/bb896300.aspx Typed ObjectQuery - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_QBM
LINQ to DataSet	MSDN Library LINQ Samples Hub page - http://msdn.microsoft.com/en-us/library/bb397980.aspx#csharp
LINQ to Entities	MSDN Library EntityClient data provider - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_EntityClient LINQ Samples Hub page - http://msdn.microsoft.com/en-us/library/bb397980.aspx#csharp LINQ to Entities - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_LINQ
LINQ to Objects	All-in-One Code Framework Use LINQ to Objects in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#501157 Use LINQ to Objects in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#598174
LINQ to SQL	All-in-One Code Framework Use LINQ to SQL in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#511053 Use LINQ to SQL in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#600266 Code Gallery LINQ to SQL N-tier Smart Client - http://code.msdn.microsoft.com/linqntier Code Gallery An Example of a Multi Tier Architecture for LINQ to SQL - http://code.msdn.microsoft.com/multitierlinqtosql LINQ Samples Hub page - http://msdn.microsoft.com/en-us/library/bb397980.aspx#csharp LINQ to SQL - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_LINQ2SQL LINQ to SQL N-tier Smart Client - http://code.msdn.microsoft.com/linqntier SketchPad - http://code.msdn.microsoft.com/sketchpad TPT Inheritance with LINQ to SQL - http://code.msdn.microsoft.com/TPT
N-Tier	Code Gallery An Example of a Multi Tier Architecture for LINQ to SQL - http://code.msdn.microsoft.com/multitierlinqtosql Building N-Tier Apps with EF4 - http://code.msdn.microsoft.com/mag200911EF4 LINQ to SQL N-tier Smart Client - http://code.msdn.microsoft.com/linqntier
O/RM Mapping	Code Gallery Entity Framework Sample Provider - http://code.msdn.microsoft.com/EFSampleProvider
OData	Code Gallery Silverlight Samples for OData Over SQL Azure with AppFabric Access Control - http://code.msdn.microsoft.com/SL3ODataSQLAzureACS WCF Data Services Documentation Samples - http://code.msdn.microsoft.com/AstoriaDocSamples
POCO	Update POCO entity properties and relationships (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1317741 Update POCO entity properties and relationships (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#1317759
Silverlight	Code Gallery How to consume ADO.NET Data Services in Silverlight 3 - http://code.msdn.microsoft.com/KB982499
SQL Server	MSDN Library .NET Framework Data Provider for SQL Server - http://msdn.microsoft.com/en-us/library/dw70f090.aspx#_SqlClient Conserving Resources When Writing BLOB Values to SQL Server - http://msdn.microsoft.com/en-us/library/3517w44b(VS.71).aspx Optimistic Concurrency - http://msdn.microsoft.com/en-us/library/aa0416cz(VS.71).aspx Paging Through a Query Result - http://msdn.microsoft.com/en-us/library/tx1c9c2f(VS.71).aspx Retrieving Identity or Autonumber Values - http://msdn.microsoft.com/en-us/library/ks9f57t0(VS.71).aspx
Streaming	Code Gallery Streaming Photo Data Service Sample - http://code.msdn.microsoft.com/StreamingPhotoData/Wiki/View.aspx
WCF Data Services	All-in-One Code Framework ADO.NET Data Service in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#659875 ADO.NET Data Service in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#659791 Use ADO.NET Data Service in C# - http://1code.codeplex.com/SourceControl/changeset/view/55574#659914 Use ADO.NET Data Service in VB.NET - http://1code.codeplex.com/SourceControl/changeset/view/55574#659888 Use ADO.NET Data Service in Silverlight (C#) - http://1code.codeplex.com/SourceControl/changeset/view/55574#825814 Use ADO.NET Data Service in Silverlight (VB.NET) - http://1code.codeplex.com/SourceControl/changeset/view/55574#825838 Code Gallery Building an ADO.NET Data Services WPF Client - http://code.msdn.microsoft.com/astoriawpf/Release/ProjectReleases.aspx?ReleaseId=2083 How to consume ADO.NET Data Services in Silverlight 3 - http://code.msdn.microsoft.com/KB982499 How to create and then to call ADO.NET Data Services for different data sources - http://code.msdn.microsoft.com/KB982497 JSONP and URL-controlled format support for ADO.NET Data Services - http://code.msdn.microsoft.com/DataServicesJSONP WCF Data Services Documentation Samples - http://code.msdn.microsoft.com/AstoriaDocSamples

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Sample Applications	Layered Architecture Sample Tailspin Spyworks ASP.NET MVC Nerd Dinner MVC Music Store
AJAX / jQuery	All-in-One Code Framework ASP.NET AJAX Extender (C#) ASP.Net Ajax ScriptControl (C#) Code Gallery AJAX pager Ajax Paging for DataGrid ASP.NET dropdownlist using ajax & VB Building an AJAX Web Part for Microsoft Office Project Server 2007 Code for "New Features To Slice, Store, And Accelerate Your Web Applications” CRM WCF Integration - Blogged at http://www.waelhamze.com Fast, Scalable ASP.NET AJAX Content Proxy that Streams content Improving WCF, AJAX, and ASP.NET Security and Performance Joel Rumerman's Code Samples Microsoft Visual Studio AJAX Profiling Extensions Power Tool NHibernateAccessExtension Paulo Morgado's Code Gallery RegClientControls Student Information using ASP.NET MVC 2.0 and AJAX Web Application Toolkit for Bing Search Microsoft Support KB961864 - _pendingCallbacks[...].async' is null on ASP.NET 2.0 AJAX site
Authentication	Code Gallery Fabrikam Jets - Integrating Codename "Dallas" with AppFabric Access Control Remote Desktop Services Developer Resources Token Authentication for ASP.NET Customer Support KB971831 - Allow token based authentication w/o transport or message encryption
Authorization	Code Gallery Claims-Based Authorization with Windows Identity Foundation Code for "Authorization In WCF-Based Services" Enhanced authorization module for MCMS FabrikamShipping MSServices, HTTP Data Provider Oragon Security
CSS 2	ASP.NET CSS Templates Code for “New Features to Slice, Store and Accelerate your Web Applications Devscribe Web Widgets with .Net
Data Access	All-in-One Code Framework ASP.NET custom data source for rdlc (C#) Code Gallery A sample of ASP.NET ObjectDataSource with Northwind database All-In-One Code Framework (AIO) An Example of a Multi Tier Architecture for Linq to Sql ASP.NET Dynamic Data Preview Building a LINQ Provider Data Access in a SharePoint Web Part Inserting Data into SQL Compact Edition Databases in Visual Studio LINQ Entity Data Reader MSDN Code Gallery Information and Discussion Working with Microsoft Access Data in Visual Studio
Exception Management	Code Gallery C# tested & easiest lines of code for send email with ASP.NET page Code for "Error Handling in Workflows" ElementaryExtensions Library ESB Guidance WCF Error Handler Exception Filter Inject - Provides C# dll/exe's with execption filter support Exception Handler Info Generator - http://code.msdn.microsoft.com/ExceptionHandlerInfo Exception handling Fix Page Layout Visual Studio Template for Microsoft Dynamics CRM Plug-ins Windows Server 2008 R2 WinForm Exception Interceptor XmlCleanupSoapExtension Microsoft Support KB893005 - Exception thrown in ErrorProvider constructor KB899511 - System.NullReferenceException exceptions in .NET 1.1 KB913393 - Error when you specify a larger than 2 GB Content-Length HTTP header KB917495 - OutOfMemoryException exception when you run a .NET 2.0 application KB923028 - "Unhandled Error" when you run a .NET Framework 2.0 Remoting KB930771 - Exception due to managed heap corruption KB934839 - Exception when you browse .NET Framework 2.0 ASP.NET Web application KB941132 - NullReferenceException exception when you use ShowDialog method KB960096 - Error message when you try to add files to Source Code Control (SCC) KB971169 - Exception When App_GlobalResource Has Culture Name Like zh-hant KB975954 - AccessViolationException or a dead-lock occurs in .NET 2.0 based app KB981119 - ScriptModule throws FIPS exception on Win 7
JavaScript / JSON	Code Gallery Code for "New Features To Slice, Store, And Accelerate Your Web Applications” CRM Silverlight Integration - Blogged at http://www.waelhamze.com CRM WCF Integration - Blogged at http://www.waelhamze.com JavaScript in SharePoint 2010 JavaScript snippet JSON ASP.NET Sample JSONP and URL-controlled format support for ADO.NET Data Services KB958502 - JScript Editor support for “-vsdoc.js” IntelliSense doc. files Live Framework Microsoft Visual Studio AJAX Profiling Extensions Power Tool SharePoint Javascript Utilities Web Widgets with .Net
Logging and Instrumentation	patterns & practices Implementing Intercepting Filter in ASP.NET Using HTTP Module
MVC	Code Gallery Asynchronous support for ASP.NET MVC How to: Implement Remote Validation from a Client in MVC How to: Validate Model Data Using DataAnnotations Attributes Mytrip.Mvc System.Web.Mvc.Controller class Using an Asynchronous Controller in ASP.NET MVC Walkthrough: Adding ASP.NET AJAX Scripting to an MVC Project Walkthrough: Creating a Basic MVC Project with Unit Tests in Visual Studio Walkthrough: Organizing an ASP.NET MVC Application using Areas Walkthrough: Using MVC View Templates with Data Scaffolding Walkthrough: Using Templated Helpers to Display Data
Navigation	Codeplex Navigation for ASP.NET Web Forms
Request Processing	ASP.NET Developer Center (www.ASP.NET) HTTP Handlers and Factories
State / Session Management	Code Gallery ASP.NET Session Monitor 1.0 Cutting Edge: The ASP.NET View State
Validation	Code Gallery Validating Form Input Controls How to: Implement Remote Validation from a Client in MVC How to: Validate Model Data Using DataAnnotations Attributes
Visual Studio and ASP.NET Development	Code Gallery Bootstrapper Manifest Generator C# Micro Chess (Huo Chess) Employee Info Starter Kit Huo Chess - XNA Edition Microsoft Solver Foundation - Express Edition PowerCommands for Visual Studio 2008 Samples Environment for Microsoft Chart Controls StickyNotes Visual C# 2008 Samples Visualization and Modeling SDK (DSL Tools) Lab Microsoft Support KB912019 - Error when you rebuild and view a Windows Form in Visual Studio 2005 KB915782 - InvalidCastException error in an ASP.NET-connected Web application KB917952 - Error message when you try to install a ClickOnce application KB918559 - Performance issues when debugging a Visual Studio 2005 C++ Project KB926776 - A hotfix rollup package for 913297, 913393, 918995, and 924895 KB928208 - Compile and runtime issues for Visual Basic Macros KB930198 - C2244 error after you install Visual Studio SP1 KB943969 - Visual Studio 2005 Slow Performance when you use IntelliSense feature KB946040 - Error C2471: cannot update program database, Visual C++ 2008 project KB946581 - Cumulative update for Visual Web Developer Express 2008 KB958502 - JScript Editor support for “-vsdoc.js” IntelliSense doc. files

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原文链接：http://blogs.msdn.com/b/jmeier/archive/2010/10/31/ado-net-code-samples-collection.aspx 版权声明：本文全部版权归原作者所有。

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原文链接：http://blogs.msdn.com/b/jmeier/archive/2010/10/31/ado-net-code-samples-collection.aspx

版权声明：本文全部版权归原作者所有。