silverlight/xap如何接收参数?

silverlight不能象flash一样，直接以类似xxx.xap?name=123的方式传递参数，而是要用另一种方式实现:

html部分(注意高亮部分):

<object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">
<param name="@R_489_9016@e" value="ClientBin/InitParams.xap?color=red"/>
<param name="onerror" value="onSilverlightError" />
<param name="BACkground" value="white" />
<param name="minRuntimeVersion" value="3.0.40624.0" />
<param name="autoUpgrade" value="true" />
<param name="InitParams" value="name=jimmy.yang,age=30" />
<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>

注:InitParams传递参数时，必须以x=y,a=b这样的键值对格式传入

cs部分:

App.Xaml.cs:

public partial class App : Application
{

IDictionary<String,String> _Dic;

...

        private void Application_Startup(object sender,StartupEventArgs E)
        {
          _Dic = e.InitParams;
            this.RootVisual = new MainPage(_Dic);        
        }
...
注:这里用e.InitParams取得传入的参数，同时利用new MainPage(_Dic)将参数传到需要的xaml中去

MainPage.Xaml.cs部分:

public partial class MainPage : UserControl
{
IDictionary<String,String> _params;

public MainPage()
{
    InitializeComponent();           
}

public MainPage(IDictionary<String,String> DicParam)
{
    InitializeComponent();
    _params = DicParam;

    StringBuilder sb = new StringBuilder();
    foreach (var item in _params)
    {
sb.Append(String.Format("key:{0},value:{1}" + Environment.NewLine,item.Key,item.value));
    }

    txtParam.Text = sb.ToString();
}
}

注:这里，我们重载了一个带参数的构造函数用于接受参数

更简单方法：

1）aspx端

 response.Redirect("SLInterestTestPage.aspx?A=123&B=345");

  2）Silverlight端接收
            idictionary<String,String> paras = HtmlPage.Document.QueryString;
            String s = paras["A"];
            String b = paras["B"];

注意：有时传递汉语会遇到乱码问题，解决方法是：把汉字进行Base64编码，接收时解码就不会有乱码问题了。