Dependency Properties can be set from many different places; inline, animations, coercion, triggers, etc. As such a Dependency Property Value Precedence list was created and this dictates which changes override which other changes. Because of this order of precedence, we can’t use a Trigger to update a property that is explicitly set inline in your … Read more
Use MultiDataTrigger type <Style TargetType=”ListBoxItem”> <Style.Triggers> <DataTrigger Binding=”{Binding Path=State}” Value=”WA”> <Setter Property=”Foreground” Value=”Red” /> </DataTrigger> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding=”{Binding Path=Name}” Value=”Portland” /> <Condition Binding=”{Binding Path=State}” Value=”OR” /> </MultiDataTrigger.Conditions> <Setter Property=”Background” Value=”Cyan” /> </MultiDataTrigger> </Style.Triggers> </Style>
The issue here is Property Value Precedence. You are currently setting the Background to blue directly on the DockPanel. This explicit property will override any value set by the trigger. Instead, you must set the original “Background” as a setter in the style. <DockPanel DockPanel.Dock=”Left” Width=”10″> <DockPanel.Style> <Style> <Setter Property=”DockPanel.Background” Value=”Blue” /> <Style.Triggers> <DataTrigger Binding=”{Binding … Read more
Can you post your Storyboard? It sounds like you have some kind of Binding in the Storyboard definition. Ok so, as I suspected, it’s because you’re using a Binding in your Storyboard. You can’t do this because WPF attempts to freeze all the resources leveraged by a template for efficiency and when you use a … Read more
You could create an IValueConverter, which converts an integer to a boolean based on the CutOff. Then use DataTrigger.Value of True (or False, depending on what you are returning). WPF DataTriggers are strictly equality comparers if I remember correctly. So something similar to: public class CutoffConverter : IValueConverter { public object Convert(object value, Type targetType, … Read more
This is a bit of a cheat but I just set a default style and then overrode it using a DataTrigger if the value is null… <Style> <!– Highlight for Reviewed (Default) –> <Setter Property=”Control.Background” Value=”PaleGreen” /> <Style.Triggers> <!– Highlight for Not Reviewed –> <DataTrigger Binding=”{Binding Path=REVIEWEDBY}” Value=”{x:Null}”> <Setter Property=”Control.Background” Value=”LightIndianRed” /> </DataTrigger> </Style.Triggers> </Style>
The local value assigned to the TextBlock’s Text property has higher precedence than the value provided by the Setter in the DataTrigger. See Dependency Property Value Precedence for details. Set the initial Text value by another Setter: <TextBlock> <TextBlock.Style> <Style TargetType=”TextBlock”> <Setter Property=”Text” Value=”Unclicked”/> <Style.Triggers> <DataTrigger Binding=”{Binding Clicked, Source={x:Static Application.Current}}” Value=”{StaticResource True}”> <Setter Property=”Text” Value=”Clicked” … Read more