自定义SilverLight控件并调用

时间：2010-08-18 来源：single1970

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)