CODEWITHSUNDEEP
c#wpfxamldata-bindingdatagrid
Felix D.
Felix D.

Reputation: 5093

Binding to Collection in DataGridRowHeader not working as expected

My DataGrid is bound to an ObservableCollection<Entry>.

public class Entry
{
     public List<string> Types {get; set;} = new List<string>() {"Type1", "Type2"};
}

Since DataGrid.ItemsSource is an Collection of Entry I expect the DataContext of a single DataGridRow to be typeof(Entry).

<DataGrid ItemsSource="{Binding Entries}">
    <DataGrid.RowHeaderTemplate>
       <DataTemplate>
          <Border Width="100">
              <StackPanel>                                
                  <ComboBox ItemsSource="{Binding DataContext.Entries[0].Types, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Window}}" />
                  <ComboBox ItemsSource="{Binding Types}" />
              </StackPanel>
          </Border>
      </DataTemplate>
   </DataGrid.RowHeaderTemplate>
</DataGrid>

The first Binding is working - the second is not.

Still I get no BindingErrorin the Output-Window of Visual Studio.

I need to show the Types for each Entry so access via index is not working.

Upvotes: 0

Views: 40

Answers (1)

mm8
mm8

Reputation: 169200

This should work:

<ComboBox ItemsSource="{Binding DataContext.Types, RelativeSource={RelativeSource AncestorType=DataGridRowHeader}}" />

Upvotes: 1

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