博客园_同在一片蓝天下-啊黄移动开发－工作流http://feed.cnblogs.com/blog/u/23752/rss2011-08-17T10:06:28Z啊黄http://www.cnblogs.com/wt0731/CNBlogs BlogServerhttp://www.cnblogs.com/wt0731/archive/2011/05/15/2046985.html校验普通电话、传真号码、手机号码：可以“+”开头，除数字外，可含有“-”校验普通电话、传真号码、手机号码：可以“+”开头，除数字外，可含有“-”2011-05-15T09:32:00Z2011-05-15T09:32:00Z啊黄http://www.cnblogs.com/wt0731/<p></p>
<div style="background-color: #F5F5F5;border: 1px solid #CCCCCC;padding-left:5px;padding-right:5px;">
<div><span style="color: #008080"> 1</span> <span style="color: #008000">//</span><span style="color: #008000">校验普通电话、传真号码：可以“+”开头，除数字外，可含有“-”</span><span style="color: #008000"><br /></span><span style="color: #008080"> 2</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #0000ff">function</span><span style="color: #000000"> isTel(object) <br /></span><span style="color: #008080"> 3</span> <span style="color: #000000"> {<br /></span><span style="color: #008080"> 4</span> <span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000">(object.length</span><span style="color: #000000"><=</span><span style="color: #000000">0</span><span style="color: #000000">||</span><span style="color: #000000">object.length</span><span style="color: #000000"><=</span><span style="color: #000000">0</span><span style="color: #000000">)<br /></span><span style="color: #008080"> 5</span> <span style="color: #000000"> {<br /></span><span style="color: #008080"> 6</span> <span style="color: #000000"> alert(</span><span style="color: #000000">"</span><span style="color: #000000">联系电话不能为空，请填写！</span><span style="color: #000000">"</span><span style="color: #000000">);<br /></span><span style="color: #008080"> 7</span> <span style="color: #000000"> object.focus(); <br /></span><span style="color: #008080"> 8</span> <span style="color: #000000"> </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #0000ff">false</span><span style="color: #000000">;<br /></span><span style="color: #008080"> 9</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">10</span> <span style="color: #000000"> </span><span style="color: #008000">//</span><span style="color: #008000">国家代码(2到3位)-区号(2到3位)-电话号码(7到8位)-分机号(3位)"</span><span style="color: #008000"><br /></span><span style="color: #008080">11</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #0000ff">var</span><span style="color: #000000"> s </span><span style="color: #000000">=</span><span style="color: #000000"> object.value;<br /></span><span style="color: #008080">12</span> <span style="color: #000000"> </span><span style="color: #0000ff">var</span><span style="color: #000000"> pattern </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">/</span><span style="color: #000000">^(([0\+]\d{2,3}-)?(0\d{2,3})-)(\d{7,8})(-(\d{3,}))?$</span><span style="color: #000000">/</span><span style="color: #000000">; </span><span style="color: #008000">//</span><span style="color: #008000">座机</span><span style="color: #008000"><br /></span><span style="color: #008080">13</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #0000ff">var</span><span style="color: #000000"> pattern2 </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">/</span><span style="color: #000000">^(\d{7,8})?$</span><span style="color: #000000">/</span><span style="color: #000000">; </span><span style="color: #008000">//</span><span style="color: #008000">座机不带区号的</span><span style="color: #008000"><br /></span><span style="color: #008080">14</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #0000ff">var</span><span style="color: #000000"> pattern1 </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">/</span><span style="color: #000000">^(13[0-9]|15[0|3|6|7|8|9]|18[6|8|9])\d{8}$</span><span style="color: #000000">/</span><span style="color: #000000">; </span><span style="color: #008000">//</span><span style="color: #008000">手机</span><span style="color: #008000"><br /></span><span style="color: #008080">15</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (s </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #000000">""</span><span style="color: #000000">) <br /></span><span style="color: #008080">16</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">17</span> <span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> ((pattern.exec(s)) </span><span style="color: #000000">||</span><span style="color: #000000"> (pattern1.exec(s)) </span><span style="color: #000000">||</span><span style="color: #000000"> (pattern2.exec(s))) <br /></span><span style="color: #008080">18</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">19</span> <span style="color: #000000"> </span><span style="color: #008000">//</span><span style="color: #008000"> alert('请输入正确的电话号码:电话号码格式为国家代码(2到3位)-区号(2到3位)-电话号码 (7到8位)-分机号(3位)"');</span><span style="color: #008000"><br /></span><span style="color: #008080">20</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #008000">//</span><span style="color: #008000"> object.focus();</span><span style="color: #008000"><br /></span><span style="color: #008080">21</span> <span style="color: #008000"></span><span style="color: #000000"> </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #0000ff">true</span><span style="color: #000000">;<br /></span><span style="color: #008080">22</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">23</span> <span style="color: #000000"> </span><span style="color: #0000ff">else</span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> ((</span><span style="color: #000000">!</span><span style="color: #000000">pattern.exec(s)) </span><span style="color: #000000">&&</span><span style="color: #000000"> (</span><span style="color: #000000">!</span><span style="color: #000000">pattern1.exec(s)) </span><span style="color: #000000">&&</span><span style="color: #000000"> (</span><span style="color: #000000">!</span><span style="color: #000000">pattern2.exec(s))) <br /></span><span style="color: #008080">24</span> <span style="color: #000000"> {<br /></span><span style="color: #008080">25</span> <span style="color: #000000"> alert(</span><span style="color: #000000">'</span><span style="color: #000000">请输入正确的联系电话</span><span style="color: #000000">'</span><span style="color: #000000">);<br /></span><span style="color: #008080">26</span> <span style="color: #000000"> object.focus();<br /></span><span style="color: #008080">27</span> <span style="color: #000000"> </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #0000ff">false</span><span style="color: #000000">;<br /></span><span style="color: #008080">28</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">29</span> <span style="color: #000000"> }<br /></span><span style="color: #008080">30</span> <span style="color: #000000"> }</span></div></div>
<p></p><img src="http://www.cnblogs.com/wt0731/aggbug/2046985.html?type=1" width="1" height="1" alt=""/><p><a href="http://www.cnblogs.com/wt0731/archive/2011/05/15/2046985.html" target="_blank">本文链接</a></p>http://www.cnblogs.com/wt0731/archive/2011/04/21/2023686.html移动开发丛书之全平台_wp7_ 资源图片使用WP7中的图片资源是在代码中使用的外部文件。这些文件作为应用程序的一部分，被编译到应用程序当中。WP7中会用到大量的图片资源文件，如应用程序列表图标、Tile背景、程序启动画面、应用程序的图标、SplashScreenImage、背景图片，主题应用等大量使用场景。2011-04-21T07:54:00Z2011-04-21T07:54:00Z啊黄http://www.cnblogs.com/wt0731/<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.1</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><span style="font-family: 宋体"><font size="5">概述<o:p></o:p></font></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">WP7中的图片资源是在代码中使用的外部文件。这些文件作为应用程序的一部分，被编译到应用程序当中。WP7中会用到大量的图片资源文件，如应用程序列表图标、Tile背景、程序启动画面、应用程序的图标、SplashScreenImage、背景图片，主题应用等大量使用场景。<o:p></o:p></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">本节我们将讲解如何使用图片资源，如何选择图片资源格式，BuildAction使用“Content”还是“Resource”，以及如何在代码中使用图片资源。<o:p></o:p></span></p>
<p style="line-height: 19.5pt; text-indent: 21pt; margin: 7.5pt 0cm 0pt;background: #f8f8f8" ><strong><span style="font-family: 微软雅黑; color: black; font-size: 10pt; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN" lang="EN-US"><o:p> </o:p></span></strong></p>
<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.2</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><span style="font-family: 宋体"><font size="5">选择JPG还是PNG格式<o:p></o:p></font></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">一个最简单的提高性能的方法就是使用合适的图片格式。Windows Phone 中支持两种图片格式：JPG和PNG。通常，JPG格式解码速度比PNG更快，所以所有情况下都应该优先考虑JPG图片，除非，图片要使用透明的情况，此时必须用PNG，因为JPG不支持透明。 <o:p></o:p></span></p>
<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.3</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><span style="font-family: 宋体"><font size="5">选择图片还是XAML<o:p></o:p></font></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">在Expression Design中做设计时，可以创建很复杂的图形效果。这些图形可以导出为XAML也可以导出为图片文件。当图形为静态图形时，应当考虑将其存储为图片而不是XAML。实际显示时，相比图片的解码与渲染两个过程，XAML可能需要更多的处理。XAML需要解析XAML、在视图树中创建对象、渲染对象。例如，在创建一个下棋游戏时，你可能会用Expression Design为每个棋子创建一个很复杂的图形效果。但是，因为棋子是静态的,所以从性能考虑应该将棋子导出为图片而不是XAML. <o:p></o:p></span></p>
<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.4</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><span style="font-family: 宋体"><font size="5">限制图片大小<o:p></o:p></font></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">受限于手机有限存储（WP7上一个应用程序可使用的内存不能超过<st1:chmetcnv unitname="m" sourcevalue="90" hasspace="False" negative="False" numbertype="1" tcsc="0" w:st="on">90M</st1:chmetcnv>，否则程序会自动退出并且不报任何异常信息）和屏幕分辨率，另一个优化性能的方法是限制图片大小在2000*2000以内，这也是WP7环境下图片的大小上限。更大的图片应在低分辨率下取样后再显示，如果图片大于2000*2000其显示会明显减慢。<o:p></o:p></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">如果必须使用2000*2000以上的图片，那么应该每次只显示图片的一部分。你可以通过先将图片载入到一个T:System.Windows.Media.Imaging.WriteableBitmap中，然后使用LoadJpeg(WriteableBitmap, Stream)扩展方法来载入图片。以下代码示范了载入大图片的推荐方法。<o:p></o:p></span></p>
<p style="text-indent: 36pt; margin: 0cm 0cm 6pt; mso-char-indent-count: 4.0" ><span style="font-family: 'Courier New'; color: windowtext; font-size: 9pt; mso-fareast-language: EN-US; mso-font-kerning: 0pt" lang="EN-US"><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path><o:lock v:ext="edit" aspectratio="t"></o:lock></v:shapetype><v:shape style="width: 8.25pt; height: 12pt" id="Code_Open_Image_350556" alt="" o:spid="_x0000_i1025" type="#_x0000_t75"><v:imagedata src="file:///C:\DOCUME~1\user\LOCALS~1\Temp\msohtml1\01\clip_image001.gif" o:href="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif"></v:imagedata></v:shape>XAML</span><font face="Times New Roman"><span style="font-family: 'ヒラギノ角ゴ Pro W3'; color: windowtext; font-size: 9pt; mso-bidi-font-family: 'Courier New'; mso-fareast-language: EN-US; mso-font-kerning: 0pt; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'" lang="EN-US">代码</span><span style="font-family: 'Courier New'; font-size: 9pt; mso-fareast-language: EN-US; mso-font-kerning: 0pt" lang="EN-US"><o:p></o:p></span></font></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span><Grid x:Name="ContentGrid" Grid.Row="1"><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span><Image Height="3000" HorizontalAlignment="Left" Margin="6,6,0,0" Name="largeimage" Stretch="Fill" VerticalAlignment="Top" Width="3000" /><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span><Button Content="</span><span style="font-family: 宋体; font-size: 9pt; mso-bidi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'" lang="EN-US">加载图片</span><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US">" Height="70" HorizontalAlignment="Left" Margin="159,501,0,0" Name="btnLoad" VerticalAlignment="Top" Width="152" Click="btnLoad_Click" /><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span></Grid></span><span style="font-family: 'Courier New'; font-size: 9pt; mso-fareast-language: ZH-CN" lang="EN-US"><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt; mso-fareast-language: ZH-CN" lang="EN-US"><o:p> </o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><v:shape style="width: 8.25pt; height: 12pt" id="_x0000_i1026" alt="" type="#_x0000_t75"><v:imagedata src="file:///C:\DOCUME~1\user\LOCALS~1\Temp\msohtml1\01\clip_image001.gif" o:href="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif"></v:imagedata></v:shape>C#</span><span style="font-family: 宋体; font-size: 9pt; mso-bidi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'" lang="EN-US">代码</span><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: NSimSun; font-size: 9.5pt; mso-bidi-font-family: NSimSun" lang="EN-US"><span style="mso-spacerun: yes"> </span></span><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>/// <summary><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>/// </span><span style="font-family: 宋体; font-size: 9pt; mso-bidi-font-family: 'Courier New'; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'" lang="EN-US">加载图片</span><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>/// </summary><span style="mso-spacerun: yes"> </span><o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>private void btnLoad_Click(object sender, RoutedEventArgs e)<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>{<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>StreamResourceInfo sri = null;<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>Uri uri = new Uri("Devdiv_LoadingLargeImages;component/img/sky.JPG", UriKind.Relative);<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>sri = Application.GetResourceStream(uri);<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><o:p> </o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>WriteableBitmap wb = new WriteableBitmap((int)this.largeimage.Width, (int)this.largeimage.Height);<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>Extensions.LoadJpeg(wb, sri.Stream);<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><o:p> </o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>this.largeimage.Source = wb;<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt 45.8pt; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" ><span style="font-family: 'Courier New'; font-size: 9pt" lang="EN-US"><span style="mso-spacerun: yes"> </span>}<o:p></o:p></span></p>
<p style="line-height: 18pt; text-indent: 24pt; margin: 0cm 0cm 7.5pt" ><span style="font-family: 微软雅黑; color: black; font-size: 10pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></p>
<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.5</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><span style="font-family: 宋体"><font size="5">BuildAction选择“Content”还是“Resource”？<o:p></o:p></font></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">有时候在你的程序中会附带一些图片、音乐、视频文件等等，这些文件的BuildAction可以设置为“Content”然后作为独立大的文件来访问，也可以设置为“Resource”把它们作为资源文件读取。那么哪种方式好呢？<o:p></o:p></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">微软给出的建议是使用”Content”要比“Resource”性能上好一些。因为Windows Phone 7是为文件和网络流做了优化处理，但是Memory流却没有。设置成Content类型，这些文件将会作为独立的文件存在XAP包中，如果设置为Resource，它们会被编译到dll中，如果把这些文件设置为Resource方式的话，它们实际上在回放的时候还需要读取出来放到文件中，反而降低了性能。所以，如果你的程序中有大量的媒体文件的话，要想性能好，还是把它们的BuildAction设置为“Content”比较好一些。大文件建议把BuildAction设置为“Resource”，借助<a href="http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.extensions.loadjpeg(v=VS.92).aspx" target="_blank"><span style="color: black; text-decoration: none; text-underline: none"><u>LoadJpeg(WriteableBitmap, Stream)</u></span></a>扩展方法来载入大图片，前面已经说到。<o:p></o:p></span></p>
<p style="text-align: center; margin: 0cm 0cm 0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align="center"><span style="font-family: 宋体; mso-bidi-font-family: 宋体" lang="EN-US"><o:p></o:p></span></p><strong style="mso-bidi-font-weight: normal"><span style="font-family: 宋体; font-size: 9pt; mso-bidi-font-family: Times-Roman; mso-fareast-language: ZH-CN; mso-ascii-font-family: Times-Roman; mso-hansi-font-family: Times-Roman">
<p><a href="http://www.devdiv.com/data/attachment/portal/201104/21/153956x79n79zggbgz2igu.gif" target="_blank"><img alt="" src="http://www.devdiv.com/data/attachment/portal/201104/21/153956x79n79zggbgz2igu.gif" /></a></p></span></strong>
<p style="text-align: center; margin: 0cm 0cm 0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align="center"><strong style="mso-bidi-font-weight: normal"><span style="font-family: 宋体; font-size: 9pt; mso-bidi-font-family: Times-Roman; mso-fareast-language: ZH-CN; mso-ascii-font-family: Times-Roman; mso-hansi-font-family: Times-Roman">图</span></strong><font face="Times New Roman"><strong style="mso-bidi-font-weight: normal"><span style="font-family: Times-Roman; font-size: 9pt; mso-bidi-font-family: Times-Roman; mso-fareast-language: ZH-CN" lang="EN-US">14.1</span></strong><span style="font-family: Times-Roman; font-size: 9pt; mso-bidi-font-family: Times-Roman; mso-fareast-language: ZH-CN" lang="EN-US"> </span></font><font size="3"><span style="font-family: 宋体; mso-fareast-language: ZH-CN" lang="EN-US">BuildAction</span><span style="font-family: 宋体; mso-fareast-language: ZH-CN">选项设置</span><span style="font-family: 宋体; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN" lang="EN-US"><o:p></o:p></span></font></p>
<p style="margin: 0cm 0cm 0pt" ><span style="mso-fareast-language: ZH-CN" lang="EN-US"><o:p><font size="3" face="Times New Roman"> </font></o:p></span></p>
<p style="margin: 0cm 0cm 0pt" ><span style="mso-fareast-language: ZH-CN" lang="EN-US"><o:p><font size="3" face="Times New Roman"> </font></o:p></span></p>
<p style="margin: 0cm 0cm 0pt" ><span style="mso-fareast-language: ZH-CN" lang="EN-US"><o:p><font size="3" face="Times New Roman"> </font></o:p></span></p>
<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.6</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><span style="font-family: 宋体"><font size="5">删除对象节约内存<o:p></o:p></font></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="mso-spacerun: yes"><font face="Times New Roman"> </font></span><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">WP7上一个应用程序可使用的内存不能超过<st1:chmetcnv unitname="m" sourcevalue="90" hasspace="False" negative="False" numbertype="1" tcsc="0" w:st="on">90M</st1:chmetcnv>，否则程序会自动退出并且不报任何异常信息。<o:p></o:p></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400"><span style="mso-spacerun: yes"> </span>同时，WP7上使用image会占用大量内存，不论是在UI上添加Image控件还是为Panorama控件设置图像背景。因此，为了节约内存，可以在需要的时候手动释放不再需要的Image控件，如果你觉得垃圾收集不好用的话。<o:p></o:p></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400"><o:p> </o:p></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400"><span style="mso-spacerun: yes"> </span>下面三种方法都能释放内存，但是第一种方法并没有完全释放，还保存了几十K的信息，估计是用于恢复图像显示的。<o:p></o:p></span></p>
<p style="margin: 0cm 0cm 0pt" ><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400"><o:p><font size="3"> </font></o:p></span></p>
<p style="margin: 0cm 0cm 0pt" ><strong style="mso-bidi-font-weight: normal"><span style="font-family: 'Courier New'" lang="EN-US"><font size="3">1.Image_Logo.Visibility = System.Windows.Visibility.Collapsed;<o:p></o:p></font></span></strong></p>
<p style="margin: 0cm 0cm 0pt" ><strong style="mso-bidi-font-weight: normal"><span style="font-family: 'Courier New'" lang="EN-US"><font size="3">2.LayoutRoot.Children.Remove(Image_Logo);<o:p></o:p></font></span></strong></p>
<p style="margin: 0cm 0cm 0pt" ><strong style="mso-bidi-font-weight: normal"><span style="font-family: 'Courier New'" lang="EN-US"><font size="3">3.Image_Logo.Source = null;<o:p></o:p></font></span></strong></p>
<p style="margin: 0cm 0cm 0pt" ><span lang="EN-US"><span style="mso-spacerun: yes"><font size="3" face="Times New Roman"> </font></span></span></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><strong style="mso-bidi-font-weight: normal"><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: #0400; mso-ansi-language: #0400">注意：如果Image是在XAML文件里定义的，则用上述方法是不起作用的。</span></strong><strong style="mso-bidi-font-weight: normal"><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-ansi-language: #0400"><o:p></o:p></span></strong></p>
<p style="text-indent: 18pt; margin: 0cm 0cm 6pt" ><strong style="mso-bidi-font-weight: normal"><span style="font-family: 宋体; font-size: 12pt; mso-bidi-font-size: 10.0pt; mso-ansi-language: #0400"><o:p> </o:p></span></strong></p>
<p style="text-indent: -21pt; margin: 13pt 0cm 13pt 21pt; mso-outline-level: 3; mso-list: l1 level1 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; mso-bidi-font-family: 宋体"><span style="mso-list: Ignore"><font size="5">14.7</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><font size="5"><font face="Cambria"><span style="font-family: 'ヒラギノ角ゴ Pro W3'; mso-ascii-font-family: 'Cambria Bold'; mso-hansi-font-family: 'Cambria Bold'">建议</span><span style="font-family: 宋体"><o:p></o:p></span></font></font></p>
<p style="line-height: 18pt; text-indent: -21pt; margin: 3.55pt 0cm 3.55pt 42pt;background: #fefef2; word-break: break-all; mso-list: l1 level2 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; color: black; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt"><span style="mso-list: Ignore"><font size="3">a)</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><font size="3"><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">如果程序有主界面的话</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">，</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">尽量不要在主界面上放太多图像控件</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">。<o:p></o:p></span></font></p>
<p style="line-height: 18pt; text-indent: -21pt; margin: 3.55pt 0cm 3.55pt 42pt;background: #fefef2; word-break: break-all; mso-list: l1 level2 lfo2; tab-stops: list 0cm" ><span style="font-family: 宋体; color: black; mso-bidi-font-family: 宋体; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt"><span style="mso-list: Ignore"><font size="3">b)</font><span style="font: 7pt 'Times New Roman'"> </span></span></span><font size="3"><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">尽可能将需要播放动画</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">或者</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">含大量图像的</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">页面</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">单独做成一个</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">页面</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">,播放完毕或者用完就离开这个</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">页面</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">。<o:p></o:p></span></font></p>
<p style="line-height: 18pt; text-indent: -21pt; margin: 3.55pt 0cm 3.55pt 42pt;background: #fefef2; word-break: break-all; mso-list: l1 level2 lfo2; tab-stops: list 0cm" ><span style="mso-fareast-font-family: 'Times New Roman'" lang="EN-US"><span style="mso-list: Ignore"><font face="Times New Roman"><font size="3">c)</font><span style="font: 7pt 'Times New Roman'"> </span></font></span></span><font size="3"><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">Panorama</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">控件的</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">的</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">背景图片</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">如果设置成图像的话</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">，</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">会消耗大量内存，一般<st1:chmetcnv unitname="m" sourcevalue="24" hasspace="False" negative="False" numbertype="1" tcsc="0" w:st="on">24M</st1:chmetcnv>左右，</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">所以在使用</span><span style="font-family: 宋体; color: black; mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">Panorama</span><span style="font-family: 宋体; color: black; mso-fareast-language: ZH-CN; mso-ansi-language: #0400; mso-font-kerning: 1.0pt">控件的时候考虑</span><span style="font-family: 宋体; mso-fareast-language: #0400; mso-ansi-language: #0400">内存不能超过<st1:chmetcnv unitname="m" sourcevalue="90" hasspace="False" negative="False" numbertype="1" tcsc="0" w:st="on">90M</st1:chmetcnv></span><span style="font-family: 宋体; mso-fareast-language: ZH-CN; mso-ansi-language: #0400">的原则。</span><span style="mso-fareast-language: #0400; mso-ansi-language: #0400; mso-font-kerning: 1.0pt"><font face="Times New Roman"> </font></span></font></p>
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