Chapter 25 Page 874

Frodo · December 20th, 2011, 10:48 AM

I tried to run the code snippet at the top. I get:

Quote:

Error 1 Key attribute can be used only on a tag contained in an IDictionary type property.

How can I get it to run?

ChristianNagel · January 8th, 2012, 04:32 PM

Do you mean this code?

Code:

<Trigger Property="MyBooleanValue" Value="true">
  <Setter Property="Opacity" Value="0.5" />
</Trigger>

Where did you place this XAML fragment to? As the text explains, you need to place this within the Triggers property of a control that has a property named MyBooleanValue.
Use the code segment that follows for a concrete sample.