DataTrigger Defined in CellTemplate of RadGridView Column Doesn't Work.

Updated on Sep 24, 2025

Environment

Product Version	2022.3.1109
Product	RadGridView for WPF

Description

A DataTrigger defined in a GridViewColumn's CellTemplate or CellEditTemplate of RadGridView doesn't work.

Solution

Several alternative options can be used instead of DataTrigger. The following trigger definition will serve as a reference on how to replace it with another approach.

DataTrigger definition

XAML

	<telerik:GridViewDataColumn DataMemberBinding="{Binding PersonName}"> 
		<telerik:GridViewDataColumn.CellTemplate> 
			<DataTemplate> 
				<TextBlock x:Name="textBlock" Text="{Binding PersonName}" /> 
				<DataTemplate.Triggers> 
					<DataTrigger Binding="{Binding IsPersonAvailable}" Value="False" > 
						<Setter TargetName="textBlock" Property="Background" Value="Red" /> 
					</DataTrigger> 
				</DataTemplate.Triggers>
			</DataTemplate> 
		</telerik:GridViewDataColumn.CellTemplate> 
	</telerik:GridViewDataColumn> 

Instead, use one of the following ideas:

• Using a direct data binding for the property targeted by the trigger.

  In that case an additional property in the row's data model should be defined and updated accordingly.

  XAML

  	<telerik:GridViewDataColumn DataMemberBinding="{Binding PersonName}"> 
  		<telerik:GridViewDataColumn.CellTemplate> 
  			<DataTemplate> 
  				<TextBlock x:Name="textBlock" Text="{Binding PersonName}" Background="{Binding PersonBackground}" /> 
  			</DataTemplate> 
  		</telerik:GridViewDataColumn.CellTemplate> 
  	</telerik:GridViewDataColumn> 

• Using an IValueConverter.

  In that case the converter can return red color if the bound boolean value is false, and black (or other) color when true.

  XAML

  	<telerik:GridViewDataColumn DataMemberBinding="{Binding PersonName}"> 
  		<telerik:GridViewDataColumn.CellTemplate> 
  			<DataTemplate> 
  				<TextBlock x:Name="textBlock" Text="{Binding PersonName}" Background="{Binding IsPersonAvailable, Converter={StaticResource MyBooleanToBrushConverter}}" /> 
  			</DataTemplate> 
  		</telerik:GridViewDataColumn.CellTemplate> 
  	</telerik:GridViewDataColumn> 

• Using the ContentTemplate of GridViewCell instead of the CellTemplate.

  To utilize this idea, use the CellStyle property of the column.

  XAML

  	<telerik:GridViewDataColumn DataMemberBinding="{Binding PersonName}"> 
  		<telerik:GridViewDataColumn.CellStyle> 
  			<Style TargetType="telerik:GridViewCell">
  				<Setter Property="ContentTemplate">
  					<Setter.Value>
  						<DataTemplate>
  							<TextBlock x:Name="textBlock" Text="{Binding PersonName}" /> 
  							<DataTemplate.Triggers> 
  								<DataTrigger Binding="{Binding IsPersonAvailable}" Value="False" > 
  									<Setter TargetName="textBlock" Property="Background" Value="Red" /> 
  								</DataTrigger> 
  							</DataTemplate.Triggers>
  						</DataTemplate>
  					</Setter.Value>
  				</Setter>
  			</Style>
  		</telerik:GridViewDataColumn.CellTemplate> 
  	</telerik:GridViewDataColumn>