setting visibility of label in wpf

sumit7034

hi I am binding label through <Label Content="{Binding Path=OrderDetails.OrderPaymentId}" FontSize="20"> now i want if the value of OrderDetails.OrderPaymentId=0 then the visibility of label become collapsed please help how to do this using style or trigger

realJSOP

You need to create a value converter class, and bind the Visibility property to it in your xaml.

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sumit7034

<Label.Style> <Style> <Style.Triggers> <DataTrigger Binding="{Binding Path=OrdeDetails.OrderPaymentId}" Value="0"> <Setter Property="Label.Visibility" Value="Collapsed"></Setter> </DataTrigger> </Style.Triggers> </Style> </Label.Style>

Ian Shlasko

Or, like John said, write a value converter... 1) Create a class that inherits from IValueConverter 2) Implement the Convert function such that it returns Visibility.Collapsed for 0, or Visibility.Visible for anything else. 3) Create an instance of that class in your resources section in the XAML, and give it a key 4) Reference it in the binding: {Binding OrderDetails.OrderPaymentId,Converter={StaticResource MyConverter}}

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Kunal Chowdhury IN

You can try both the Solution given above. Both are perfect answer.

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devvvy

Converter works:

<UserControl.Resources>
<BooleanToVisibilityConverter x:Key="MyBooleanToVisibilityConverter" />
</UserControl.Resources>

...

In above example, bIsVisible is a simple CLR property of type Boolean. But as with any other "Enum", you do NOT need a converter, you could have binded a property of type "System.Windows.Visibility" directly to your control:

In above example, SomeButtonVisibility is a dependency property of type System.Windows.Visibility. I used a Dependency Property as supposed to a common CLR property only because I want take advantage of "Two Way" notification.

dev