I am trying to change the default style of a DataGridCell (within a WPF Toolkit DataGrid) when there is a validation error. The default is a red border. How can I put my own template?
Thanks.
Try this:
<!-- Cell Style -->
<Style x:Key="CellErrorStyle" TargetType="{x:Type TextBlock}">
<Style.Triggers>
<Trigger Property="Validation.HasError" Value="true">
<Setter Property="ToolTip"
Value="{Binding RelativeSource={RelativeSource Self},
Path=(Validation.Errors)[0].ErrorContent}"/>
<Setter Property="Background" Value="Yellow"/>
</Trigger>
</Style.Triggers>
</Style>
And use it:
<DataGrid.Columns>
<DataGridTextColumn
ElementStyle="{StaticResource CellErrorStyle}">
</DataGridTextColumn>
</DataGrid.Columns>