Hello,

I'm trying to incorporate a xamDataGrid into an MVVM application.

I have the grid bound to an observable collection in my viewModel.  This collection is of another viewModel object type.

Inside my grid, some of the editors are set to xamComboEditors which items are bound to another collections in my viewmodel.

I'm having trouble when using the AllowAddNew feature.  If the user initializes the new row from a field with a combo editor in it, the new item is added to my collection, however the property setter from the combo select is lost.  If the user initializes the new row from a text or even a check box editor, the new row is added to my collection and then the property setter is called.  I was trying to change the DataItemUpdateTrigger value, but have not had any luck.  I think I am missing something. 

Here is the a simplified example of the code I am using:

Grid:

<igWPF:XamDataGrid Visibility="{Binding TimeEntryCalls, Converter={StaticResource NullVisibilityConverter}}"IsSynchronizedWithCurrentItem="True" DataSource="{Binding Path=TimeEntryCalls, Mode=TwoWay}" MaxHeight="200"  >
 <igWPF:XamDataGrid.FieldLayoutSettings>
  <igWPF:FieldLayoutSettings AutoGenerateFields="False" AddNewRecordLocation="OnBottom" AllowAddNew="True" AllowDelete="True" />
  </igWPF:XamDataGrid.FieldLayoutSettings>
  <igWPF:FieldLayout.Fields>
   <igWPF:UnboundField Name="Equip" Label="Vehicle" BindingPath="SelectedTimeCall.Equip" BindingMode="TwoWay" >
    <igWPF:Field.Settings>
     <igWPF:FieldSettings EditorType="{x:Type igEditors:XamComboEditor}" DataItemUpdateTrigger="OnCellValueChange"  >
      <igWPF:FieldSettings.EditorStyle>
       <Style TargetType="{x:Type igEditors:XamComboEditor}">
        <Setter Property="ItemsSource" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.EquipmentForDivision, IsAsync=True}" />
        <Setter Property="SelectedItem" Value="{Binding DataItem.SelectedTimeCall.Equip, Mode=TwoWay}"/>
        <Setter Property="DisplayMemberPath" Value="EquipCode" />
        <Setter Property="AcceptsArrowKeysInEditMode" Value="True"/>
        </Style>
      </igWPF:FieldSettings.EditorStyle>
     </igWPF:FieldSettings>
    </igWPF:Field.Settings>
   </igWPF:UnboundField>
   <igWPF:UnboundField Name="IsDriver" Label="Driver" BindingPath="SelectedTimeCall.IsDriver" BindingMode="TwoWay" Converter="{StaticResource IgnoreNewItemPlaceHolderConverter}" >
    <igWPF:Field.Settings>
     <igWPF:FieldSettings EditorType="{x:Type igEditors:XamCheckEditor}" DataItemUpdateTrigger="OnCellValueChange">
      </igWPF:FieldSettings>
    </igWPF:Field.Settings>
   </igWPF:UnboundField>
   <igWPF:UnboundField Name="CallHours" Label="Hours"  BindingPath="SelectedTimeCall.CallHours" BindingMode="TwoWay">
    <igWPF:Field.Settings>
     <igWPF:FieldSettings DataItemUpdateTrigger="OnLeaveCell" EditAsType="Core:Double"/>
    </igWPF:Field.Settings>
   </igWPF:UnboundField>
  </igWPF:FieldLayout.Fields>
  </igWPF:FieldLayout>
 </igWPF:XamDataGrid.FieldLayouts>
</igWPF:XamDataGrid>

Code from my viewModel:

private ObservableCollection<CallViewModel> timeEntryCalls;

public ObservableCollection<CallViewModel> TimeEntryCalls
{
 get
 {
  return timeEntryCalls;
 }
 set
 {
  timeEntryCalls = value;
   OnPropertyChanged();
 }
}

public List<EQUIPMENT> EquipmentForDivision { get; set; }

void timeEntryCalls_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
 if (e.Action == NotifyCollectionChangedAction.Add)
 {
  try
  {
   foreach (CallViewModel call in e.NewItems)
   {
     //calling methods inside CallViewModel to initialize values
   }
  }
  catch (Exception ex)
  {
   //handle any exceptions
  }
 }
 
 OnPropertyChanged("TimeEntryCalls");
}