html中调用silverlight中的方法

在xaml页面中放置一个textblock控件来绑定数据

<ItemsControl   x:Name="cityname">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <TextBlock  Text="{Binding  CityName}" />
                </DataTemplate>
            </ItemsControl.ItemTemplate>
        </ItemsControl>

实体类：

public class MyData
    {
        public string MyName { get; set; }
        public string CityName { get; set; }
        public double Longatuide { get; set; }
        public MyData(string name,string cityname, double atuide)
        {
            CityName=cityname;
            MyName = name;
            Longatuide = atuide;
        }
    }

后他代码：

public MainPage()

{

InitializeComponent();

Myinfos("China");

this.Loaded += new RoutedEventHandler(MainPage_Loaded);

}

void MainPage_Loaded(object sender, RoutedEventArgs e)

{

HtmlPage.RegisterScriptableObject("showmessage",this);    //注册要想浏览器公开的对象，然后才可以从js调用

}

[ScriptableMember]  //使用ScriptableMemberAttribute标记那些成员可被脚本化

public void Myinfos(string strwhere)

{

List<MyData> datas = GetMyInfo(strwhere);

cityname.ItemsSource = datas;

}

public  List<MyData>  GetMyInfo(string  strwhere)

{

List<MyData> datas = new List<MyData>();

switch(strwhere)

{

case  "China":

{

datas.Add(new MyData("danche","中国",12233));

break;

}

case  "America":

{

datas.Add(new MyData("金泰熙","韩国",20013));

break;

}

}

return datas;

}

现在在silverlight宿主html中添加按钮：

</div> 
            <div id="JScontrol"   style="width:400px; height:76px; left:0px;top:200px; position:absolute">
            <input  type="button"  id="America"   value="btnAmercia" onclick="callMyinfos('America');" />
            <input  type="button"  id="China" value="btnChina"  onclick="callMyinfos('China');" />
        </div>

函数：

<script type="text/javascript">
        function callMyinfos(country) {
            var mycontroldiv = document.getElementById("mycontrol");
            mycontroldiv.content.showmessage.Myinfos(country);//此处的showmessage就是在silverlight后台注册的key
        }
    </script>

完整代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" >

<head>

<title>silverlightviahtmlandjs</title>

<style type="text/css">

html, body {      height: 100%;      overflow: auto;     }

body {      padding: 0;      margin: 0;     }

#silverlightControlHost {      height: 100px;      width:200px;      text-align:center;     }

</style>

<script type="text/javascript" src="Silverlight.js"></script>

<script type="text/javascript">

function onSilverlightError(sender, args) {

var appSource = "";

if (sender != null && sender != 0) {

appSource = sender.getHost().Source;

}

var errorType = args.ErrorType;

var iErrorCode = args.ErrorCode;

if (errorType == "ImageError" || errorType == "MediaError") {               return;             }

var errMsg = "Silverlight 应用程序中未处理的错误 " +  appSource + "\n" ;

errMsg += "代码: "+ iErrorCode + "    \n";

errMsg += "类别: " + errorType + "       \n";

errMsg += "消息: " + args.ErrorMessage + "     \n";

if (errorType == "ParserError") {

errMsg += "文件: " + args.xamlFile + "     \n";

errMsg += "行: " + args.lineNumber + "     \n";

errMsg += "位置: " + args.charPosition + "     \n";

}

else if (errorType == "RuntimeError") {

if (args.lineNumber != 0) {

errMsg += "行: " + args.lineNumber + "     \n";

errMsg += "位置: " +  args.charPosition + "     \n";

}

errMsg += "方法名称: " + args.methodName + "     \n";

}

throw new Error(errMsg);         }

</script>

<script type="text/javascript">

function callMyinfos(country) {

var mycontroldiv = document.getElementById("mycontrol");

mycontroldiv.content.showmessage.Myinfos(country);

}

</script>

</head>

<body>

<form id="form1" runat="server" style="height:100%">

<div id="silverlightControlHost">

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

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

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

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

<param name="minRuntimeVersion" value="4.0.50401.0" />

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

<a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=4.0.50401.0" style="text-decoration:none">

<img src="http://go.microsoft.com/fwlink/?LinkId=161376" alt="获取 Microsoft Silverlight" style="border-style:none"/>

</a>

</object>

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

</div>

<div id="JScontrol"   style="width:400px; height:76px; left:0px;top:200px; position:absolute">

<input  type="button"  id="America"   value="btnAmercia" onclick="callMyinfos('America');" />

<input  type="button"  id="China" value="btnChina"  onclick="callMyinfos('China');" />

</div>

</form>

</body>

</html>