EventToCommand no DataTemplate
Estou usando a classe EventToCommand do MVVM-light-Toolkit para manipular o AutoGeneratingColumn-Event no WPF-DataGrid. Funciona bem no meu Main-DataGrid, mas eu uso outro DataGrid no RowDetailsTemplate e aqui tenho um problema: O AutoGeneratingColumn é acionado antes que o EventToCommand-Object seja gerado. Existe uma solução para este problema? Aqui está um pedaço do meu código Xaml:
<DataGrid DockPanel.Dock="Top" AutoGenerateColumns="True" Name="table" VerticalAlignment="Top" ItemsSource="{Binding PartBatchList}" IsReadOnly="True">
<i:Interaction.Triggers>
<i:EventTrigger EventName="AutoGeneratingColumn">
<hgc:EventToCommand Command="{Binding AutoGeneratingColumnCommand}" PassEventArgsToCommand="True"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<DataGrid.RowDetailsTemplate>
<DataTemplate>
<StackPanel Margin="30,0,30,30" Orientation="Vertical">
<Border CornerRadius="4" Padding="5" Background="White">
<DataGrid ItemsSource="{Binding Workpieces}"
CanUserReorderColumns="False" CanUserResizeColumns="False" CanUserSortColumns="False"
AutoGenerateColumns="True" AutoGeneratingColumn="WorkpieceListAutoGeneratingColumn">
<i:Interaction.Triggers>
<i:EventTrigger EventName="AutoGeneratingColumn">
<hgc:EventToCommand Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGrid},AncestorLevel=2}, Path=DataContext.AutoGeneratingColumnCommand}" PassEventArgsToCommand="True"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</DataGrid>
</Border>
</StackPanel>
</DataTemplate>
</DataGrid.RowDetailsTemplate>
</DataGrid>
O WorkpieceListAutoGeneratingColumn do manipulador de eventos no arquivo Code-Behind é chamado, o comando no meu ViewModel nunca é chamado.
Andreas