xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
<telerik:RadGridView.ColumnGroups>
<telerik:GridViewColumnGroup Name="Vehicle"
Header="Vehicle" />
<telerik:GridViewColumnGroup Name="Engine"
Header="Engine" />
<telerik:GridViewColumnGroup Name="Price"
Header="Price" />
</telerik:RadGridView.ColumnGroups>
The type 'telerik:GridViewColumnGroup' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.
getting error...solution?