What is the best way to handle a single event that might occur in multiple controls of the same type

  • Thread starter Thread starter Siv
  • Start date Start date
S

Siv

Hi,
I am struggling with VB.NET's lack of indexing on controls.

I have a form with 23 text boxes and I want to be able to drag some items in
a list to any one of those text boxes. In VB6 I would have made a control
array of text boxes and put my dragenter and dragdrop stuff in a single
event procedures that related to the array. Is there a neat way to do this
in .NET or do I have to create 23 separate event procedures? one for each
text box. It seems very wasteful of resources?

Siv
 
Siv said:
Hi,
I am struggling with VB.NET's lack of indexing on controls.

I have a form with 23 text boxes and I want to be able to drag some items in
a list to any one of those text boxes. In VB6 I would have made a control
array of text boxes and put my dragenter and dragdrop stuff in a single
event procedures that related to the array. Is there a neat way to do this
in .NET or do I have to create 23 separate event procedures? one for each
text box. It seems very wasteful of resources?

Siv
Click to expand...

Look at the end of any event procedure declaration - you'll see the 'handles
clause'
just add to it
ie: "handles textbox1.change, textbox2.change, textbox3.change....etc"
 
Siv,
Hi,
I am struggling with VB.NET's lack of indexing on controls.
Click to expand...

How you come at that idea?

Only there are so much methods for that.

This is what I wrote the last 3 months about that in this newsgroup alone
http://tinyurl.com/create.php

And this is than only the array of controls, for handling it would be much
more. One of the methods is as Hal wrote.

I hope this helps?

Cor
 
Siv said:
I have a form with 23 text boxes and I want to be able to drag some items
in a list to any one of those text boxes. In VB6 I would have made a
control array of text boxes and put my dragenter and dragdrop stuff in a
single event procedures that related to the array. Is there a neat way to
do this in .NET or do I have to create 23 separate event procedures? one
for each text box. It seems very wasteful of resources?
Click to expand...

\\\
Private Sub Button_Click( _
ByVal sender As Object, _
ByVal e As EventArgs _
) Handles Button1.Click, Button2.Click, Button3.Click
MsgBox(DirectCast(sender, Button).Name)
End Sub
///

Take a look at the 'AddHandler' and 'RemoveHandler' keywords too.
 
Hal,
I suppose it had to be this simple as I couldn't find this in any of the
VB.NET books I have (3 in all)
Thanks for your help.
I had almost worked this out myself, but wasn't convinced.

Siv
 
I didn't either,
I had got my answer from some of the prior posters and the link did look as
if it might be incorrect.

Cor has corrected it now.

Siv
 
Cor,
I was thanking you for responding, I didn't follow the link as I had
already got the answer from the first poster (Hal Rosser) and Herfried has
filled in the remaining issue about how you identify which control triggered
the event. I suspected that the link was in error and didn't follow it.

Again, thanks.
Siv
 
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