How to bind visibility property

问题

The XAML code is as follows:

<Helper:BooleanVisibilityValueConverter x:Key="BoolToVisible" />
   <Control x:Name="ResizeDecorator" MouseMove="ResizeDecorator_MouseMove" Template=" {StaticResource ResizeDecoratorTemplate}" Visibility="{Binding IsButtonVisible,Converter= {StaticResource ResourceKey=BoolToVisible},RelativeSource={RelativeSource  TemplatedParent}}" />
<Helper:BooleanVisibilityValueConverter x:Key="BoolToVisible" />
<Control x:Name="ResizeDecorator"  MouseMove="ResizeDecorator_MouseMove" Template="{StaticResource ResizeDecoratorTemplate}" Visibility="{Binding IsButtonVisible,Converter={StaticResource ResourceKey=BoolToVisible},RelativeSource={RelativeSource TemplatedParent}}"  />

The ViewModel code:

private bool _IsButtonVisible;
public bool IsButtonVisible
{
    get { return _IsButtonVisible; }
    set
    {
        _IsButtonVisible = value;
        NotifyPropertyChanged("IsButtonVisible");
    }
}

IsButtonVisible =false;

Can anyone tell me where am I going wrong?

回答1:

I'm guessing that the problem is that you are binding to IsButtonVisible on your templated parent. Instead you need to bind to IsButtonVisible on the ViewModel/DataContext of your templated parent - i.e.

Visibility="{Binding DataContext.IsButtonVisible,Converter={StaticResource ResourceKey=BoolToVisible},RelativeSource={RelativeSource TemplatedParent}}"

来源：https://stackoverflow.com/questions/10479490/how-to-bind-visibility-property