SilverlightShow: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control? Comments

Re: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

shadiabuhilal — Fri, 03 Jun 2011 18:01:14 GMT

You can use the code to access InitParams in your application

Application.Current.Host.InitParams["KeyName"]

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

Yissel — Mon, 07 Feb 2011 22:42:14 GMT

If those params changed, how can I know it, from the App.xaml.cs

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

Ajay — Fri, 04 Feb 2011 10:23:42 GMT

Great

1.thanks

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

Muhammad Talha — Mon, 08 Feb 2010 11:07:06 GMT

Great !.Thanks

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

ange — Wed, 18 Mar 2009 14:57:38 GMT

Is it possible to set the initparameters via javascript?

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

Enrai — Mon, 02 Feb 2009 06:37:53 GMT

The Silverlight itself can access the Url and get the QueryString, so you don't have to bother with passing it tio the HTML that invokes your Silverlight application. Using the HtmlPage class you are able to access the DOM and the url of the current page:

string queryParam = HtmlPage.Document.QueryString[];

For example you can do the following thing: In the App.xaml.cs add the following code in the Application_Startup handler:

private void Application_Startup( object sender, StartupEventArgs e )

    this.RootVisual = new Page();

    string queryParam = HtmlPage.Document.QueryString["key"];

    this.Resources.Add( , queryParam );

This way you can access the parameter through the application resources, which means it will be easyly accessible from both the Xaml and the Codebehind. The synthax for accessing the resource is:

XAML

<silverlightControl Property={StaticResource ResourceKey} />

object parameter = ( ( App )Application.Current).Resources[  ];

That's it! ;)

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

Russ Blake — Sun, 01 Feb 2009 05:03:43 GMT

What I need to do is eactly what you have shown, thanks. But I must also set the parameter from the code-behind of the page that is hosting the Silverlight control. You have them set in the HTML that invokes the control: this will not work in my case, because the parameter is not known until run time. I am passing it into the page on the Query String. I can then retrieve the parameter, that is no problem. But I can't figure out how to set it into the html that invokes the Silverlight control. Can you show me how this is done? Thanks!

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

Alan — Mon, 12 Jan 2009 12:04:46 GMT

And what if you're using Silverlight in the ASP.NET MVC framework?

I'd like to pass in parameters from data in my model, but I don't want to use the code behind to set them, because in the RC1 of MVC ,ASPX code behind files will be no more !

If you try to pass in parameters in the ASPX file you get the following error:

"Server tags cannot contain <% ... %> constructs"

RE: Tip: How to pass initialize parameters to Silverlight application using ASP.NET 3.5 Silverlight control?

PaulHemmings — Sun, 07 Dec 2008 21:03:28 GMT

But how would I read values from a database control and pass them into the silverlight InitParams?