WPF datagrid combobox column: how to manage event of selection changed?

Question

I have a datagrid, with a combobox column

<DataGridComboBoxColumn x:Name="DataGridComboBoxColumnBracketType" Width="70" Header="Tipo di staffa" SelectedValueBinding="{Binding type, UpdateSourceTrigger=PropertyChanged}">                    
            </DataGridComboBoxColumn>

I want an event that is fired only when the user changes the value into the combobox. How can I resolve this?

Answer 1

I found a solution to this on CodePlex. Here it is, with some modifications:

<DataGridComboBoxColumn x:Name="Whatever">                    
     <DataGridComboBoxColumn.EditingElementStyle>
          <Style TargetType="{x:Type ComboBox}">
               <EventSetter Event="SelectionChanged" Handler="SomeSelectionChanged" />
          </Style>
     </DataGridComboBoxColumn.EditingElementStyle>           
</DataGridComboBoxColumn>

and in the code-behind:

private void SomeSelectionChanged(object sender, SelectionChangedEventArgs e)
{
     var comboBox = sender as ComboBox;
     var selectedItem = this.GridName.CurrentItem;

}