As you see on snapshot I have comboxEditor inside cell , once I uncomment following code for DataErrorContentTemplateKey ,I can see comboeditor inside cell but no data there. I don't what I am doing mistake. I attached zipfile, you can eaisly reproduce after commenting/uncommeting following code. my goal is only make transparent of background from pink

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<DataTemplate x:Key="{x:Static igDP:DataPresenterBase.DataErrorContentTemplateKey}">
<Grid x:Name="panel">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Border x:Name="errorBorder"
BorderThickness="1"
BorderBrush="#FF5D696D"
Grid.ColumnSpan="2"
Visibility="Collapsed"
SnapsToDevicePixels="True">

</Border>
<Control x:Name="errorIcon"
Visibility="Collapsed"
Margin="4,0,0,0"
Style="{DynamicResource {x:Static igDP:DataPresenterBase.DataErrorIconStyleKey}}" />

<ContentPresenter x:Name="content"
ContentTemplate="{x:Null}"
Grid.Column="1"
Margin="0,0,2,0" />
</Grid>
<DataTemplate.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding Path=Host.HasDataError}"
Value="true" />
<Condition Binding="{Binding Path=Host.IsDataErrorDisplayModeIcon}"
Value="true" />
</MultiDataTrigger.Conditions>
<Setter TargetName="errorIcon"
Property="Visibility"
Value="Visible" />
<Setter TargetName="errorIcon"
Property="ToolTip"
Value="{Binding Path=Host.DataError}" />

</MultiDataTrigger>
</DataTemplate.Triggers>
</DataTemplate>