WPF DataValidation on a DataTemplate object in an ItemsControl
- by Matt H.
I have two datatemplates, both very similar... here is one of them:
<DataTemplate x:Key="HeadingTemplate">
<Grid x:Name="mainHeadingGrid" Margin="5,5,30,0" HorizontalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="1" Margin="30,3,10,0" Foreground="Black" FontWeight="Bold"
HorizontalAlignment="Left" TextWrapping="Wrap">
<TextBlock.Text>
<MultiBinding Converter="{StaticResource myHeadingConverter}"
ConverterParameter="getRNHeadingTitle" Mode="TwoWay">
<Binding Path="num"/>
<Binding Path="name"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
<TextBox Grid.Column="1" Text="{Binding Path=moreInfo}"/>
</Grid>
</DataTemplate>
I use an selector in my ItemsControl to choose between the two, based on the object it is bound to.
I want to use validation to check through all of the properties and put a big exclamation point in front of the whole datatemplate as it is displayed in the itemscontrol.
how do I do this? All of the examples I've found explain how to set a ValidationRule on a specific control in the datatemplate, in that control's binding. I want to apply my validation rule to the entire template...
Help! :)
