How to Set TargetNullValue to Visibility.Collapsed in Binding

Question

I'm binding TextBlock.Visiblitiy to something, and I want to set the Binding.TargetNullValue to Collapsed, how can I do it in XAML?

This one How do I set TargetNullValue to a date? does not work in Silverlight. (No x:Static).

score 7 · Accepted Answer · answered Jan 01 '12 at 12:05

7

This is working for me in SL4:

<TextBlock Text="Text" Visibility="{Binding Foo, TargetNullValue=Collapsed}"/>

Where Foo:

public Visibility? Foo { get; set; }

answered Jan 01 '12 at 12:05

nemesv

Hmmm, this is a workaround though it works. As you know, Visibility.Collapsed is a constant, so there should be no instance to refer to it. – Peter Lee Jan 01 '12 at 19:28
@PeterLee Well... ok. But maybe I don't fully understand your problem. Why is it just a workaround for you? Could you please update your question with some sample code, XAML to be clear what you are trying to achieve? – nemesv Jan 01 '12 at 20:58
1

I tried your method before, but I misspelled the `Collapsed` . What a mistake! It's working. Forget my previous comment. – Peter Lee Jan 01 '12 at 23:39

1 Answers1