VB code view vs WPF code view

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I created an identical scenario in both a windows form and a WPF form (Visual Basic 2008), but only one of them had a problem; the WPF form. It is all centered around 2 Textboxes and one Label. Here is the very straight forward code. I need to use the WPF form so I can get a form height that is not Limited by my monitor.

VB

Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
  TextBox13.Text = TextBox17.Text
End Sub

In case you are wondering (and I wouldn’t blame you) I did enter the code in the code view of the WPF form. If you know what code to enter in XAML to do the job, I would love to see that.

The Label1 click event where TextBox13 copies from TextBox17 worked fine in the windows form, but I got an error in the WPF form.
This error:

Handles clause requires a WithEvents variable defined in the containing type or one of it’s base types.

I also noticed that I had to declare the two text boxes in WPF, but did not in the windows form.
I guess the remedy is just a little beyond my experience level.

Posted 25-Dec-10 11:32am

Joe_Baltimore

Updated 26-Dec-10 5:34am

Keith Barrow

v4

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JF2015 25-Dec-10 18:11pm

Edited to add code formatting.

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Keith Barrow · Answer 1 · 2010-12-26T05:49:00

I'm not sure how you are getting the error you are getting. The WPF label control doesn't have a click event (in fact it is illogical that the Winforms one does). You should get an error saying Label1 doesn't have a click event to handle or similar.

My advice is, if you need to create the form in WPF, not do the copy and paste handler from Winforms it is a very different model. You should also look into databinding, it will save you a lot of code.

As for this problem, you should also make the control a button (which it is logical to click :-)) but style it like a label. Though on this final point, you have to take into consideration the user experience. It isn't obvious that a label can be clicked, so you might make the form harder for the user to use than necessary.

Hope this helps