HeaderedItemsControl.Header Property
Gets or sets the item that labels the control.
Namespace: System.Windows.Controls
Assembly: System.Windows.Controls (in System.Windows.Controls.dll)
You can set a data template for the Header by using the HeaderTemplate property.
XAML usage for properties of HeaderedItemsControl also exists on TreeView. In this case, the object element you set the properties on is sdk:TreeView rather than sdk:HeaderedItemsControl.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.