Managing mandatory fields with triggers
- by okkesemin
I would like to set mandatory field backgrounds are red and others are green. So I try to implement below. But I could not set ValueConstraint Nullable property with trigger. Could you help please ?
<Window x:Class="TriggerGirilmesigerekenalanlar.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:y="http://infragistics.com/Editors"
Title="Window1" Height="300" Width="300">
<Window.Resources>
<Style TargetType="{x:Type y:XamTextEditor}">
<Style.Triggers>
<Trigger Property="ValueConstraint" Value="{x:Null}">
<Trigger.Setters>
<Setter Property="Background" Value="green"></Setter>
</Trigger.Setters>
</Trigger>
<Trigger Property="y:ValueConstraint.Nullable" Value="false">
<Trigger.Setters>
<Setter Property="Background" Value="red"></Setter>
</Trigger.Setters>
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel>
<y:XamTextEditor>
<y:XamTextEditor.ValueConstraint>
<y:ValueConstraint Nullable="False" ></y:ValueConstraint>
</y:XamTextEditor.ValueConstraint>
</y:XamTextEditor>
<y:XamTextEditor></y:XamTextEditor>
</StackPanel>
</Window>
