Home/ Questions/Q 6237983
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-24T11:07:51+00:00

We can check some control’s string property which has been empty like following code:

  • 0

We can check some control’s string property which has been empty like following code:

<Trigger SourceName="atCaption" Property="Text" Value="{x:Static sys:String.Empty}">
    <Setter TargetName="imgBack" Property="Margin" Value="0"/>
    <Setter TargetName="atCaption" Property="Margin" Value="0"/>
</Trigger>

but, how can one define a condition which is based on a ‘not empty’ string?

<!--unfortunately, can't accept '!=' operator in xaml.-->
<Trigger SourceName="atCaption" Property="Text" Value!="{x:Static sys:String.Empty}">
    <Setter TargetName="imgBack" Property="Margin" Value="0"/>
    <Setter TargetName="atCaption" Property="Margin" Value="0"/>
</Trigger>
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Using a ValueConverter is a solution.

    When using MVVM you could consider an extra property on the ViewModel class you are binding to that determines how a control should be displayed.

    When I use the MVVM-way of solving this I don’t need a trigger, I simply add extra properties to the ViewModel and bind the View’s properties to these extra properties to manipulate the View

    • 0