自定义SilverLight控件并调用

1.在aspx页面中切换调用同一个SilverLight项目中的不同用户控件

 

1.1.       方法一

修改SilverLight项目启动文件App.xml的Application_Startup事件

 

 private void Application_Startup(object sender, StartupEventArgs e)



        {



            if (!e.InitParams.ContainsKey("InitPage"))



            {



                this.RootVisual = new MainPage();



                return;



            }



            switch (e.InitParams["InitPage"])



            {



                case "SilverlightControl1":



                    this.RootVisual = new SilverlightControl1();



                    break;



                case "SilverlightControl2":



                    this.RootVisual = new SilverlightControl2();



                    break;



                default:



                    this.RootVisual = new MainPage();



                    break;



            }



 



        }

 修改aspx页面

 

 

<div id="silverlightControlHost">



           <object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%" >



                <param name="source" value="ClientBin/Binglang.SilverlightDemo19.xap"/>



                <param name="InitParams" value="InitPage=SilverlightControl1" />



                <param name="onerror" value="onSilverlightError" />



                <param name="background" value="white" />



                <param name="minRuntimeVersion" value="3.0.40624.0" />



                <param name="autoUpgrade" value="true" />



                <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40624.0" style="text-decoration: none;">



                     <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="获取 Microsoft Silverlight" style="border-style: none"/>



                </a>



           </object><iframe id="_sl_historyFrame" style='visibility:hidden;height:0;width:0;border:0px'></iframe></div>

 

 1.2.      方法二

 

 

修改SilverLight项目启动文件App.xml的Application_Startup事件

 

  private void Application_Startup(object sender, StartupEventArgs e)



        {



            if (!e.InitParams.ContainsKey("InitPage"))



            {



                this.RootVisual = new MainPage();



                return;



            }



 



            Assembly assembly = Assembly.GetExecutingAssembly();



            String rootName = String.Format("Binglang.SilverlightDemo19.{0}", e.InitParams["InitPage"]);



            UIElement rootVisual = assembly.CreateInstance(rootName) as UIElement;



            this.RootVisual = rootVisual;



 



        }





 以上反射取得所需控件,也可以用下面反射代码:

 

 

 String rootName = String.Format("Binglang.SilverlightDemo19.{0}", e.InitParams["InitPage"]);

 

 

Type type = Type.GetType(rootName );

  UIElement rootVisual = Activator.CreateInstance(type)  as UIElement;



 this.RootVisual  = (UIElement)this._contentPage;

 

修改aspx页面

 

<div id="silverlightControlHost">



           <object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%" >



                <param name="source" value="ClientBin/Binglang.SilverlightDemo19.xap"/>



                <param name="InitParams" value="InitPage=SilverlightControl1" />



                <param name="onerror" value="onSilverlightError" />



                <param name="background" value="white" />



                <param name="minRuntimeVersion" value="3.0.40624.0" />



                <param name="autoUpgrade" value="true" />



                <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40624.0" style="text-decoration: none;">



                     <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="获取 Microsoft Silverlight" style="border-style: none"/>



                </a>



           </object><iframe id="_sl_historyFrame" style='visibility:hidden;height:0;width:0;border:0px'></iframe></div>



 2.调用不同SilverLight项目中的指定控件 

 

2.1.建立项目

(1)Binglang.SilverlightDemo20

(2)Binglang.SilverlightDemo20.Web

(3) Binglang.ExternalProject

 

注意:项目Binglang.SilverlightDemo20中需要引用using System.Xml.Linq;

 

假设(1)和(3)中各有一个控件,名称都为MainPage.xaml (不一定要相同)

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