[Solved] Binding to Parent element

[Shashi]

I have a view model which looks somewhat like this

public class MyViewModel
{
    public string Name { get; set; }
    public ObservableCollection<MyModel> Items { get; set; }
}
public class MyModel
{
    public string ItemName { get; set; }
    public int ItemId { get; set; }
}

The RadDataGrid takes the Items as the ItemsSource, however, within the header (or even the cell contents) I want to show the Name property which I am unable to do so.
I have also set the view models as the DataContext of the page.

<Grid:RadDataGrid x:Name="dataGridInventCostPrice" Grid.Row="1"
                          ItemsSource="{Binding Path=ItemCostPrices}"
                          Background="{StaticResource TelerikRadGridBackground}"
                          AutoGenerateColumns="False">
    <Grid:DataGridTemplateColumn>
        <Grid:DataGridTemplateColumn.Header>
            <TextBlock>
                <Run Text="Item " />
                <Run Text="{Binding Name}" />
            </TextBlock>
         </Grid:DataGridTemplateColumn.Header>
         <Grid:DataGridTemplateColumn.CellContentTemplate>
             <DataTemplate>
                 <TextBlock>
                     <Run Text="{Binding ItemId}" />
                 </TextBlock>
             </DataTemplate>
         </Grid:DataGridTemplateColumn.CellContentTemplate>
     </Grid:DataGridTemplateColumn>
 </Grid:RadDataGrid.Columns>
</Grid:RadDataGrid>

With the standard ListView, the ItemDataTemplate would work with the above Binding

[Tsvyatko]

Hi Shashi,

Thank you for your feedback. The reason the binding does not work in the header is due to the fact that DataGridColumnHeader receives its DataGridColumn as DataContext. Unlike ListView, where only one header is present, RadDataGrid provides multiple ones (per column) and thus it needs additional information regarding header/sort direction/property name, etc. all of which is passed in the datacontext. Let us know if this clarifies the default behavior.

Nevertheless, you can easily achieve the desired behavior using binding to StaticResource or ElementName Binding. I have prepared sample project demonstrating the approach. Please have a look at it and let us know if you have any further questions.

Regards,
Tsvyatko
the Telerik team

[Shashi]

Thanks Tsvyatko,
That has worked to what I want it to do.