Executing Commands from *any* event

Hot Topic

Interop: exception passing between asmx client and Indigo web service(IIS)
Service Execution Location
Create a new tab window
how to install Visual Studio 2005
Abort animation
Dependency Property
How to ignore subsequent mouse clicks without using code
Passing values of variables from VB to Crystal Report Field
DLINQ question
Replace file name when project is created with $safeprojectname$, SourceSafe conflict

Visual Studio

Get all classes from a Project?
converting jars
Problems with Visual Studio Files
Namespace mapping in June 2006 CTP
VS 2005 debug.print No longer working
VSS Get Error
About event handler of overlay controls
TransactionIsolationLevel and multiple service contracts
vb file for a crystal report is not getting created in visual studio 2005
Binding to Custom Property

Executing Commands from *any* event

I understand that commands can be triggered off certain events of certain controls. For example, specifying a Command for a Button will trigger it off the Click event. But what if I wanted to trigger a command off of a different event -- like a Load event Is there a way to do this at all If so, can I do it from XAML only



Answer this question

Executing Commands from *any* event

  • hfann

    I agree. Thanks Mike!

  • MarilynJ

    Yes, that would be a very useful utility. Thanks Mike!


  • Gilles Lafreniere

    I just logged a feature request on the feedback site. Go here to vote and add a comment. Hopefully this is something that can be added in time for the final version.

  • Yabadabadooo

    Create a handler for the event and call RoutedCommand.Execute within your handler. I'm not sure if you should call CanExecute first or if Execute will check for you. (To err on the safe side call CanExecute first.)

    If you want this to be done strictly through XAML, you would need to derive a class from TriggerAction that fires a command and add it to an EventTrigger within XAML. If people think this utility would be useful, I could add it as a WorkItem for the WPF Toolbelt project.



  • mig16

    This is the feedback from Msft on the issue

    Microsoft wrote:
    This is by design for this version. We do understand that this is a valuable feature and are considering it for future versions.

    Thanks for the feedback!

    Looks like we won't get it with V1



  • remedios_

    If you want this to be done strictly through XAML, you would need to derive a class from TriggerAction that fires a command and add it to an EventTrigger within XAML. If people think this utility would be useful, I could add it as a WorkItem for the WPF Toolbelt project.

    I would find this useful...

  • Maciej Koper

    I looked into this further, and it doesn't seem that deriving from TriggerAction will work, since TriggerAction class is "public abstract" but it has 2 "internal abstract" methods [2 overloads for Invoke].

    Any plans from MS to change this This could be really useful...

  • arch_angel81

    Done, the tool is scheduled for the WPF Toolbelt CTP 2 release scheduled for the end of August. If the class is available prior to the official release date (through a code commit) I will let you know here. If you'd like to follow the project, you can go here

  • Pure Krome

    Well that's not fair. And looking at the implementation of its derived classes, you can't override behavior with them either.

  • Executing Commands from *any* event
Answer this question