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There are two ways to declare objects in XAML. The most common way is to declare elements using opening and closing tag - using the object element syntax

XAML

<objectName><objectName/> 

It has a shorter version

XAML

<objectName/>

that can be used if the object has no child elements. See how to set a property and how to declare a child element.

The other way is to create an object indirectly by setting a property. This syntax is used relatively rare. The type or property being set is required to support type converter that takes the string value of the property. This way the object is created from the converter using a string.

That's it!

If you want to pass initialize parameters to Silverlight application from an HTML/ASPX page, you have to find the place where your Silverlight control is inserted into the page using the <object> element and insert the bold line bellow.

HTML

<object data="data:application/x-silverlight," type="application/x-silverlight-2-b2" width="100%" height="100%"> 

    ...

    <param name="initParams" value="param1=value1,param2=value2" />

    ...

</object>

As you can see you have to insert one new element <param name="initParams" value="parameters"/> as a child of the <object> element. The syntax for parameters definition is pretty straightforward - you just have to enumerate all parameters and their values separated by commas like this: "parameter1=value1,parameter2=value2,parameter3=value3". Once the initialize parameters have been defined, you can obtain them in your application startup event handler using the InitParams property of the StartupEventArgs like this:

C#

private void Application_Startup( object sender, StartupEventArgs e )

{

    //... Other code here ...

    string param1Value = e.InitParams[ "param1" ];

}