How can you get a XAML TextBlock to collapse when it contains no data?

Question

I want to tell WPF: \"If TextBlock contains no data, then don\'t show it.\"

TRY #1 with a simple trigger produces

Answer 1

Either Try #2 or Try #3 should be fine - the problem is in the line where you are referencing the style - you need to use either 'Style="{StaticResource [KeyName]}"' or 'Style="{DynamicResource [KeyName]}"'.

Try this (in Try #2):

In Try 1 you reveal a limitation of current WPF versions: Triggers are not supported directly on elements.