Example
The simplest of the five trigger types, the Trigger is responsible for setting properties based on other properties within the same control.
<TextBlock>
<TextBlock.Style>
<Style TargetType="{x:Type TextBlock}">
<Style.Triggers>
<Trigger Property="Text" Value="Pass">
<Setter Property="Foreground" Value="Green"/>
</Trigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
In this example, the foreground color of the TextBlock will turn green when it's Text property is equal to the string "Pass".
