ContextMenuService in Silverlight 4

what is the namespace of ContextMenuService in Silverlight 4?

I want to use ContextMenu control in Silverlight 4. but I 开发者_JAVA百科dont know which namespace should I add in the xaml in order to use ContextMenu control.

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The ContextMenuService is the System.Windows.Controls.Input.Toolkit namespace. So you'll need to install the toolkit and reference the System.Windows.Controls.Input.Toolkit.dll.