Hi,

I have the following XamDataGrid.For the field defined, I need to show string while in non-edit mode and an user control(views:ProductView) in edit mode. It does exactly what I need, except it doesnot fire any properties inside the ProductViewModel in the edit mode. Looks like it is not binding to the SelectedProductViewModel. I have a doubt I am not using the styles properly. Can you please point out where I am going wrong ?

<igdp:XamDataGrid Grid.Row="1" DataSource="{Binding  Path=ListOfProduct}">

 <igdp:XamDataGrid.Resources>
   <Style x:Key="ProductCellEditStyle" TargetType="{x:Type igEditors:XamTextEditor}">
                    <Setter Property="Template" >
                        <Setter.Value>
                            <ControlTemplate>
                                <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
                                    <TextBox Text="{Binding Description}" />
                                </Grid>
                            </ControlTemplate>
                        </Setter.Value>
                        </Setter>
                  <Setter Property="EditTemplate" >
                        <Setter.Value>
                            <ControlTemplate TargetType="{x:Type igEditors:XamTextEditor}">
                                <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
                                    <views:ProductView DataContext="{Binding  SelectedProductViewModel, UpdateSourceTrigger=PropertyChanged}"/>
                                </Grid>
                                </ControlTemplate>
                       </Setter.Value>
                    </Setter>
                </Style>
 </igdp:XamDataGrid.Resources>

<igdp:XamDataGrid.FieldLayouts>
  <igdp:FieldLayout>
    <igdp:UnboundField BindingPath="Description" Label="Product" Name="Product">
       <igdp:Field.Settings>
          <igdp:FieldSettings EditorStyle="{StaticResource ProductCellEditStyle}" >
            <igdp:FieldSettings.CellValuePresenterStyle>
        <Style TargetType="{x:Type igdp:CellValuePresenter}" BasedOn="{StaticResource FontSizeStyle}"/>
            </igdp:FieldSettings.CellValuePresenterStyle>
          </igdp:FieldSettings>
       </igdp:Field.Settings>
     </igdp:UnboundField>
   </igdp:XamDataGrid.FieldLayouts>

</igdp:XamDataGrid>

Inside my Main VM or the dataContext for xamDatagrid
=========================================================
public class MainViewModel : ViewModelBase
{

 private IEnumerable<Product> _listOfProduct;
        public IEnumerable<Product> ListOfProduct
        {
            get { return _listOfProduct ?? (_listOfProduct = GetProd();) }
            set
            {
                _listOfProduct = value;
                NotifyPropertyChanged("ListOfProduct");
            }
        }
 
 private ProductViewModel _SelectedProductViewModel;
 public ProductViewModel SelectedProductViewModel
 {
            get { return _SelectedProductViewModel; }
            set
            {
                _SelectedProductViewModel = value;
                NotifyPropertyChanged("SelectedProductViewModel");
            }
 }

 //using interaction
 public void XamProductMatchGridEditModeStarting(object sender, EditModeStartingEventArgs e)
 {
    SelectedProductViewModel = somelogictogetit();
 }
}

Inside my secondary VM or the dataContext for UserControl(views:ProductView)
============================================================================
public class ProductViewModel : ViewModelBase
{
   private string _statusMessage;
   public string StatusMessage
    {
            get { return _statusMessage; }
            protected set
            {
                _statusMessage = value;
                RaisePropertyChanged(() => StatusMessage);
            }
   }
}