silverlight3 加载其他xap

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:  Assembly LoadAssemblyFromXap(Stream packageStream, String assemblyName)
 2:          {
 3:              StreamResourceInfo resouceInfo = new StreamResourceInfo(packageStream, "application/binary");
 4:              Stream mainfestStream = Application.GetResourceStream(resouceInfo, new Uri("AppManifest.xaml", UriKind.Relative)).Stream;
 5:              String appManifestString = new StreamReader(mainfestStream).ReadToEnd();
 6:   
 7:              XElement deploymentRoot = XDocument.Parse(appManifestString).Root;
 8:              List<XElement> deploymentParts = (from assemblyParts in deploymentRoot.Elements().Elements() select assemblyParts).ToList();
 9:   
10:              Assembly targetassembly = null;
11:   
12:              foreach (XElement xElement in deploymentParts)
13:              {
14:                  String source = xElement.Attribute("Source").Value;
15:                  if (source == assemblyName)
16:                  {
17:                      StreamResourceInfo streamInfo = Application.GetResourceStream(resouceInfo, new Uri(source, UriKind.Relative));
18:                      AssemblyPart asmPart = new AssemblyPart();
19:                      targetassembly = asmPart.Load(streamInfo.Stream);
20:                  }
21:              }
22:              return targetassembly;
23:          }

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:  void MainPage_Loaded(object sender, RoutedEventArgs e)
 2:  {
 3:      //加一个xap文件所在的位置
 4:      Uri address = new Uri("http://localhost:4456/ClientBin/exproject.xap");
 5:      //实例一个webClient
 6:      WebClient webClient = new WebClient();
 7:      //注册一个下载完成事件
 8:      webClient.OpenReadCompleted += new OpenReadCompletedEventHandler(webClient_OpenReadCompleted);
 9:     //开始下载
10:      webClient.OpenReadAsync(address); 
11:  }

3.下载完成后通过LoadAssemblyFromXap方法还原xpa为UIElement:

 1:  void webClient_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
 2:  {
 3:      Stream stream = Application.GetResourceStream(
 4:           new StreamResourceInfo(e.Result, null),
 5:           new Uri("AppManifest.xaml", UriKind.Relative)).Stream;
 6:      String appManifestString = new StreamReader(stream).ReadToEnd();
 7:   
 8:      Assembly assembly = LoadAssemblyFromXap(e.Result, "exproject.dll");//other project name.dll 
 9:      UIElement element = assembly.CreateInstance("exproject.MainPage") as UIElement;//other project name.mainPage 
10:      this.contaner.Children.Add(element);
11:  } 

欢迎您参与更多关于此话题的讨论,本文原创地址为:http://funsl.com admin博客

评论

abis
abis 的头像
User offline. Last seen 1 年 38 周 ago. Offline
Joined: 01/08/2010
请问如何在FRAME中加载?

如题!

黎东海
黎东海 的头像
User offline. Last seen 7 小时 39 分钟 ago. Offline
Joined: 09/13/2009
re:abis

在什么地方加载都是可以的。这不是技术的问题,就看你在语言方面是否到一定层次了。