菜菜说

protected void Page_Load(object sender, EventArgs e)
{
    Xaml1.InitParameters = "passText=参数_方法1";
}

<object data="data:application/x-silverlight," type="application/x-silverlight-2-b1" width="100%" height="100%">
    <param name="InitParams" value="passText=参数_方法2" />
    <param name="source" value="ClientBin/HowTo.xap"/>
    <param name="onerror" value="onSilverlightError" />
    <param name="background" value="white" />

    <a href="http://go.microsoft.com/fwlink/?LinkID=108182" style="text-decoration: none;">
         <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="Get Microsoft Silverlight" style="border-style: none"/>
    </a>
</object>

可以通过js来获取一些客户端的参数, 然后通过 InitParams, 将信息传给Silverlight

private void Application_Startup(object sender, StartupEventArgs e)
{
    string passText = e.InitParams["passText"];
}