Two way databinding with WPF user control

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Hi,
I have a user control with a WPF Data Grid. I used this user control in a Windows form using Element Host. I can bind the data to the user control using ListCollectionView but when i make updates to the datagrid the changes are not reflected back.

I set the Mode = TwoWay but no use.
Any ideas? Here is a sample of my code:

UserControl.xaml
<my:DataGrid
ItemsSource="{Binding}"
HorizontalScrollBarVisibility="Hidden" SelectionMode="Extended"
CanUserAddRows="False" CanUserDeleteRows="False"
CanUserResizeRows="False" CanUserSortColumns="False"
AutoGenerateColumns="False"
RowHeaderWidth="20" RowHeight="25" Width="Auto" Height="Auto"
RowStyle="{StaticResource RowSelected1}"
CellStyle="{StaticResource RowSelected}"
GridLinesVisibility="Horizontal" >
<my:DataGrid.GroupStyle>
<GroupStyle ContainerStyle="{StaticResource GroupHeaderStyle1}">
<GroupStyle.Panel>
<ItemsPanelTemplate>
<my:DataGridRowsPresenter/>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</my:DataGrid.GroupStyle>
<my:DataGrid.Columns>
<Controls:LabelTextBoxColumn
Header="Tread BarCode" Width="2*"
HorizontalAlignment="Left" VerticalAlignment="Center"
ElementStyle="{StaticResource BaseLabelCellStyle}"
EditingElementStyle="{StaticResource BaseTextBoxCellStyle}"
Binding="{Binding Name,Mode=TwoWay}"/>
//The code in my Windows form frm1 is :
this.sdaTrueName.Fill(this.dstrueSrch1.dtTrue);
view = new ListCollectionView(this.dstrueSrch1.dtTrue.ToList());
view.GroupDescriptions.Add(new PropertyGroupDescription("Name"));
UserControlABC.DataContext = view;

I have to save the data back into my database.I am using Dataset and DataTables.

Please help me with any ideas ?

Posted 1-Jul-10 11:10am

Learning_abc

Updated 1-Jul-10 19:25pm

Sandeep Mewara

v2

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Vineeth P Joseph · Answer 1 · 2010-07-01T18:59:00

Hi,
Since you are using the List<> , the add,remove notifications are not triggered,therefore the target is not updated eventhough you updated the datasource.There is a class ObservableCollection<> that triggers the add , remove notifications itself and update the view accordingly.Otherwise you update the source and target explicitly , for eg:

C#

BindingExpression expression = BindingOperations.GetBindingExpression(thedatagrid, DataGrid.ItemsSourceProperty);
     if (null != expression)
     {
       expression.UpdateSource();
     }