or
public static ResourceKey ToggleButtonStyleKey { get; }Where do I find this resource Key on a RadToolBar and how do I apply a nested style on all RadButtons/RadToggleButtons of a RadToobar?

<telerik:GridViewDataColumn Width="40" ColumnGroupName="status" Header="Header"DataMemberBinding="{Binding Status}" SortMemberPath="Status"
CellTemplateSelector="{StaticResource myDataTemplateSelector}"/>myDataTemplateSelector ist always MyVM instead of MyVM.Status.
RadGridView.ItemsSource = null;RadGridView.ItemsSource = GridDataTable;RadGridView.Items.Refresh();RadGridView.Rebind();