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="source" 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 >
 <img class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="http://go.microsoft.com/fwlink/?LinkId=108181" alt="获取 Microsoft Silverlight" />
 </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