Passing value from Default.aspx to App or Main page in silverlight3

I'm using silverlight3 and vb.net..I want to pass the va开发者_运维百科lue from Default.aspx to my App or Main page. I wrote the code in my default.aspx page which it is returning the local ip address of the client System, I would like that same address to be used in my silverlight pages.

VB code

Dim clientIPAddress = System.Net.Dns
    .GetHostAddresses(strHostName).GetValue(0).ToString()

This clientIPAddress will get the local ip of the client which is like 192.168.1.12. Now i want this value to be passed to my main page.

Please any one help to pass this value from default.aspx to my main page.

Thanks

Your default.aspx page will have an <object> tag where the Silverlight plugin is loaded. You can added a <param name="initParams value="clientID=192.168.1.12"> so it looks something like:-

<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%">
      <param name="source" value="ClientBin/Silverlight3App.xap"/>
      <param name="onError" value="onSilverlightError" />
      <param name="background" value="white" />
      <param name="minRuntimeVersion" value="3.0.40818.0" />
      <param name="autoUpgrade" value="true" />
      <param name="initParams` value="clientID=192.168.1.12"`>
      <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40818.0" style="text-decoration:none">
          <img src="http://go.microsoft.com/fwlink/?LinkId=161376" alt="Get Microsoft Silverlight" style="border-style:none"/>
      </a>
    </object><iframe id="_sl_historyFrame" style="visibility:hidden;height:0px;width:0px;border:0px"></iframe></div>
</form>

Except of course you wouldn't hardcode the IP address but you'd inject that with some VB.NET code (I don't do VB.NET).

The initParams parameter is a set of name=value pairs that are exposed in Silverlight as a IDictionary(Of String, String). You can get this dictionary from the Application Startup event arguments or from Application.Current.Host.InitParams.