Hi I have setup following kind of xamGrid in xaml:

<ig:XamGrid x:Name="dataGrid" AutoGenerateColumns="False" ColumnWidth="*"
    ItemsSource="{Binding EmployeeDepartments}">
  <ig:XamGrid.Columns>
    <ig:TextColumn Key="FirstName">
       <ig:TextColumn.HeaderTemplate>
          <DataTemplate>
            <TextBlock  Text="{Binding Path=FirstName,Source={StaticResource localizedStrings}}"/>
          </DataTemplate>
       </ig:TextColumn.HeaderTemplate>
   </ig:TextColumn>
   <ig:TextColumn Key="LastName">
       <ig:TextColumn.HeaderTemplate>
        <DataTemplate>
            <TextBlock  Text="{Binding Path=LastName,Source={StaticResource localizedStrings}}"/>
        </DataTemplate>
       </ig:TextColumn.HeaderTemplate>
     </ig:TextColumn>
   </ig:XamGrid.Columns>

  <ig:XamGrid.EditingSettings>
     <ig:EditingSettings AllowEditing="Row" IsMouseActionEditingEnabled="DoubleClick" IsEnterKeyEditingEnabled="True" IsF2EditingEnabled="True" IsOnCellActiveEditingEnabled="False" />
  </ig:XamGrid.EditingSettings>
</ig:XamGrid>

data for this grid is loaded from EmployeeDepartments which is EntitySet loaded from wcf ria service by default as IEnumerable<EmployeeDepartments> in View Model.

But when run the app, not data showing up, then I check the data in VM with debug mode, it's fine, all data already loaded.

Can't figure it out why. Help please.