I have two questions.
First isn't neccesairly related to a context menu. How can bind the IsEnabled property to whether or not a selected item in a datagrid matches a criteria.  The criteria being a property from the datasource called Status value being between 15 and 40. I could run a check afterwards in the VB codebehind before actually executing something from the context menu, but I would like it to be displayed as greyed out for the user. I am using RIA services and binding to a domaindatasource.

Second is something I ran accross while trying to find a solution for #1, is whether you can bind the header values in the radcontextmenu to a datasource. I was just doing this to check the binding but it comes up as an empty entry in the context menu.

Here is a snippet of what I was working with.

<

 

 

telerik:RadGridView x:Name="ProjectGrid" ItemsSource="{Binding ElementName=ProjectData,Path=Data}" DataContext="{StaticResource ProjectTemplate}">
 <telerik:RadContextMenu.ContextMenu>
                <telerik:RadContextMenu DataContext="{Binding ElementName=ProjectGrid,Path=SelectedItem}">
                    <telerik:RadContextMenu.Items>
                        <telerik:RadMenuItem Header="Collect $200 and Pass Go" IsEnabled=" "/>
                        <telerik:RadMenuItem Header="{Binding ElementName=ProjectGrid,Path=SelectedItem.First}"/>
                        <telerik:RadMenuItem Header="{Binding Status}"/>
                    </telerik:RadContextMenu.Items>
                </telerik:RadContextMenu>
 </telerik:RadContextMenu.ContextMenu>
</telerik:RadGridView>

Hello,

You can use RowStyleSelector to achieve your goal. Please refer to our demos for more info.
As to the context menu you have to bind it like so:

Where the "Name" in the SelectedItem is the property of the object in the ViewModel to which the GridView is bound.
Attached I am sending you the sample project I used for reference.

Hope this helps.

All the best,
Konstantina
the Telerik team