XamlParseException when a pie chart control was added to my project !!

Feb 12, 2013 at 4:36 PM
When i added that "piechart" control and added the code behind it in .cs page, am getting this error at the line "this.initializecomponent();"
An exception of type 'Windows.UI.Xaml.Markup.XamlParseException' occurred in Surveyer.exe but was not handled in user code

WinRT information: Cannot create instance of type 'DataVirtualization.Toolkit.Charting.PieChart' [Line: 13 Position: 63]

Additional information: Unspecified error
please help !!!