如何将TargetNullValue设置为Visibility.Collapsed in Binding

Question

我绑定TextBlock.Visiblitiy了什么,我想设置Binding.TargetNullValue为Collapsed,我怎么能在XAML中做到？

这个如何将TargetNullValue设置为日期？在Silverlight中不起作用.(不x:Static).

Answer 1

这在SL4中对我有用:

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

哪里有Foo:

public Visibility? Foo { get; set; }