Empty String Check in Trigger

Posted by Asim Sajjad on Stack Overflow See other posts from Stack Overflow or by Asim Sajjad
Published on 2010-04-05T09:30:08Z Indexed on 2010/04/05 9:33 UTC
Read the original article Hit count: 262

Filed under:

wpf

How can I check the empty string in triggers

<Trigger Property="Source" SourceName="ControlName"  Value="">
     <Setter Property="Height" Value="0" TargetName="ControlName" />
</Trigger>

I have set the Height of the Control to 0 if the source of the imageControl is empty stirnr or not set? How can I do it, Basically If the image is not set then I want to hide the image control in the template. thanks in advance.

Related posts about wpf

C#/WPF - RoutedEvent in WPF class that isn't a UIElement

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a class that needs to notify that something significant has occured. The class is in a WPF-project, even though this specific class, is lookless (and doesn't inherit from UIElement, neither directly or indirectly). Normally, I just register a RoutedEvent to get this functionality but as this… >>> More
How to pass value from wpf form to wpf user control

as seen on Stack Overflow - Search for 'Stack Overflow'
Hai am having a WPF user control in my WPF Form, when i click my button in my form , i just want to pass some value to the textbox which is in the usercontrol, tell me how to do this. >>> More
WPF opening up exe program within WPF window

as seen on Stack Overflow - Search for 'Stack Overflow'
Not sure if this is possible but is there a way to open up another program like notepad within the container of a WPF window? similiar to that of being able to open a web page using the webbrowser control? Basically I would like to open notepad or other exe but keep it constrained within the WPF… >>> More
Silverlight Commands Hacks: Passing EventArgs as CommandParameter to DelegateCommand triggered by Ev

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Today I've tried to find a way how to pass EventArgs as CommandParameter to DelegateCommand triggered by EventTrigger. By reverse engineering of default InvokeCommandAction I find that blend team just ignores event args.To resolve this issue I have created my own action for triggering delegate commands… >>> More
Building applications with WPF, MVVM and Prism(aka CAG)

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
In this article I am going to walk through an application using WPF and Prism (aka composite application guidance, CAG) which simulates engaging a taxi (cab). The rules are simple, the app would have3 screens A login screen to authenticate the user An information screen. A screen… >>> More

Developer IT

Empty String Check in Trigger - Developer IT

Empty String Check in Trigger

wpf

Related posts about wpf

C#/WPF - RoutedEvent in WPF class that isn't a UIElement

How to pass value from wpf form to wpf user control

WPF opening up exe program within WPF window

Silverlight Commands Hacks: Passing EventArgs as CommandParameter to DelegateCommand triggered by Ev

Building applications with WPF, MVVM and Prism(aka CAG)

Categories cloud