有些时候我们在设计有集成sl系统的时候总会想把xap作为基点来达到持续集成的效果。那么我们应该怎么做呢？

解决方法:

1.首先我们要用一个方法实现从源资中提取出Assembly:
  1. 1:  Assembly LoadAssemblyFromXap(Stream packageStream, String assemblyName)
  2. 2:          {
  3. 3:              StreamResourceInfo resouceInfo = new StreamResourceInfo(packageStream, "application/binary");
  4. 4:              Stream mainfestStream = Application.GetResourceStream(resouceInfo, new Uri("AppManifest.xaml", UriKind.Relative)).Stream;
  5. 5:              String appManifestString = new StreamReader(mainfestStream).ReadToEnd();
  6. 6: 
  7. 7:              XElement deploymentRoot = XDocument.Parse(appManifestString).Root;
  8. 8:              List deploymentParts = (from assemblyParts in deploymentRoot.Elements().Elements() select assemblyParts).ToList();
  9. 9: 
  10. 10:              Assembly targetassembly = null;
  11. 11: 
  12. 12:              foreach (XElement xElement in deploymentParts)
  13. 13:              {
  14. 14:                  String source = xElement.Attribute("Source").Value;
  15. 15:                  if (source == assemblyName)
  16. 16:                  {
  17. 17:                      StreamResourceInfo streamInfo = Application.GetResourceStream(resouceInfo, new Uri(source, UriKind.Relative));
  18. 18:                      AssemblyPart asmPart = new AssemblyPart();
  19. 19:                      targetassembly = asmPart.Load(streamInfo.Stream);
  20. 20:                  }
  21. 21:              }
  22. 22:              return targetassembly;
  23. 23:          }
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2.利用一个webClient下载指定的其他xap文件，并在下载完成后，利用上边的方法把加载后的资料还完成一个UIElement,这样我们就可以使用了.
  1. 1:  void MainPage_Loaded(object sender, RoutedEventArgs e)
  2. 2:  {
  3. 3:      //加一个xap文件所在的位置
  4. 4:      Uri address = new Uri("http://localhost:4456/ClientBin/exproject.xap");
  5. 5:      //实例一个webClient
  6. 6:      WebClient webClient = new WebClient();
  7. 7:      //注册一个下载完成事件
  8. 8:      webClient.OpenReadCompleted += new OpenReadCompletedEventHandler(webClient_OpenReadCompleted);
  9. 9:    //开始下载
  10. 10:      webClient.OpenReadAsync(address);
  11. 11:  }
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3.下载完成后通过LoadAssemblyFromXap方法还原xpa为UIElement:
  1. 1:  void webClient_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
  2. 2:  {
  3. 3:      Stream stream = Application.GetResourceStream(
  4. 4:          new StreamResourceInfo(e.Result, null),
  5. 5:          new Uri("AppManifest.xaml", UriKind.Relative)).Stream;
  6. 6:      String appManifestString = new StreamReader(stream).ReadToEnd();
  7. 7: 
  8. 8:      Assembly assembly = LoadAssemblyFromXap(e.Result, "exproject.dll");//other project name.dll
  9. 9:      UIElement element = assembly.CreateInstance("exproject.MainPage") as UIElement;//other project name.mainPage
  10. 10:      this.contaner.Children.Add(element);
  11. 11:  }
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