wpf binding issue with ItemsSource - wpf

Question

<ItemsControl ItemsSource="{Binding DataViews}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel>
<DataGrid MaxHeight="500" VerticalScrollBarVisibility="Auto" VerticalAlignment="Stretch" Margin="0,0,10,0" MaxColumnWidth="450"
RowStyle="{StaticResource DataGridRowSql}" Style="{StaticResource DataGridStyleSQL}"
ColumnHeaderStyle="{StaticResource StyleDataGridColumnHeaderDefault}" ItemsSource="{Binding}"
IsReadOnly="{Binding RelativeSource={RelativeSource AncestorType=Page},Path=Locked}"
RowEditEnding="DataGrid_RowEditEnding" >
<DataGrid.CommandBindings>
<CommandBinding Command="Copy" Executed="CommandBinding_Executed"></CommandBinding>
</DataGrid.CommandBindings>
<DataGrid.InputBindings>
<KeyBinding Key="C" Modifiers="Ctrl" Command="Copy"></KeyBinding>
</DataGrid.InputBindings>
</DataGrid>
<GridSplitter Background="Red" Height="10" HorizontalAlignment="Stretch" ResizeDirection="Rows" ResizeBehavior="PreviousAndNext"></GridSplitter>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel VerticalAlignment="Stretch"></StackPanel>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
hi, I need to have the updated data in the DataGrid_RowEditEnding event, since the e.Row doesn't have the updated data, so I thought about adding <ItemsControl ItemsSource = "{Binding DataViews, Mode = TwoWay, UpdateSourceTrigger = PropertyChanged}" > but it doesn't work, where am I wrong?

Answer 1

You will get the updated value in the CellEditEnding event handler if you just set the UpdateSourceTrigger property of the bindings to PropertyChanged.
If you are using auto-generated columns, you could handle the AutoGeneratingColumn for the DataGrid to do this:
private void DataGrid_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
{
DataGridBoundColumn dataGridBoundColumn = e.Column as DataGridBoundColumn;
if (dataGridBoundColumn != null)
{
dataGridBoundColumn.Binding = new Binding(e.PropertyName) { UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged };
}
}