WPF: Problem with binding values to ComboBox inside GridViewColumn

My Views dataContext is bounded to a presentationModel with two observableCollections Members. In the View I have one listView which ItemSource is bound to is the first observableCollection. In one of the LilstViews column I want to present values from the second obeservable Colletion in my presentationModel. I cant figure out how to get the values from the observableCollection into my combobox. Does anyone have an idea how to solve this problem?

From stackoverflow

• First thing you need to do is create a data template containing your ComboBox, in this case I have bound the ItemsSource to a DependencyProperty on the host Window. This contains the presentation model, which has a property called ComboSource. SelectedValue has been bound, via the ListViewItem's DataContext, to a property which holds the selected value.

  <ListView.Resources>
      <DataTemplate x:Key="comboBoxTemplate">
          <ComboBox
              ItemsSource="{Binding 
                              Path=ModelData.ComboSource, 
                              RelativeSource={RelativeSource AncestorType=Window}}"
              SelectedValue="{Binding 
                              Path=DataContext.Selection, 
                              RelativeSource={RelativeSource AncestorType=ListViewItem}}"
              DisplayMemberPath="Item"
              SelectedValuePath="Id"
              />
      </DataTemplate>
  </ListView.Resources>
  

  Then you will need to reference this from the CellTemplate on the GridViewColumn

  <GridViewColumn
      Header="Selection"
      Width="160"
      CellTemplate="{StaticResource comboBoxTemplate}"
      />
  

  KaJo : Tanks!!! This was very helpful

• I can't get this sample to work. It would be a great help if you could post sample code for download or tell me where to get something similar.

  Thanks, Dan