Code behind a button created with code

[Guest Notbob]

I used code to create an array of buttons that show up on the screen. Now, when someone clicks on those buttons I want to know how to run the code behind it. In my program the buttons are cmdSelect(20) 20 being the array size. When they click on the 5th button I want it to say in a text box, you clicked on button 5. If someone can drive me there, I can figure out the rest of the trip. THANKS IN ADVANCE.

[divil]

When you create the buttons, assign their Tag property their index number in the array. Also, as you create them, you need to wire up their Click events:

 

AddHandler btnArray(index).Click, AddressOf myEventFunction

 

Then you create your event handler function:

Private Sub myEventFunction(ByVal sender As System.Object, ByVal e As System.EventArgs)
   Dim btnSender As Button
   Dim intIndex As Integer

   btnSender = CType(sender, Button)
   intIndex = CType(btnSender.Tag, Integer)

   MsgBox(intIndex)
End Sub

Edited July 30, 2002 by divil

[Guest Notbob]

confused

 

Where do I add that addhandler line

[divil]

Just after you've created each one

[Guest Notbob]

add handler

 

But everytime I type that line, it underlines the addhanlder and says syntax error. I copied the exact text you orginally posted.

[Thinker]

Where are you putting the code? divil's code works ok for me.

[Guest Notbob]

code for runtime buttons

 

Ok, I am not getting this at all. Maybe I need to back up and explain. In VB 6 I used to be able to take a button and draw it right onto the form. I would then copy it and paste it to the form. I was then asked to make an array of that button. In vb.net it just adds another button and calls it button2.

 

So found a procedure to adds the buttons through the code in an array. The problem is, when I click on those buttons nothing happens. When I stop the program to edit the code, there is no button for me to double click on to edit the code like I used to in vb6. My question is, when I click on these multiple buttons that are created at run time, what code is it accessing, and how do I edit it. I sort of understand the idea behind the addhandler thing, but it does not seem to recognize the array of buttons.

[Thinker]

No, it isn't going to recognize the whole array. You have to do

the AddHandler for each member of the array.

[Guest TheIrishCoder]

http://www.developerfusion.com/show/2499/

 

Article explaining how to deal with programmatic creation and handling of multiple contorls. I wrote this to be as simple as possible and included a sample project.

[divil]

Maybe we should put that in a sticky thread somewhere since this same question seems to get asked in a different way every day.

[Guest Notbob]

Thanks

 

That was very helpful and sort of pulled it all together for me. Thanks for everyone's help. I got my button to work with your help. With this code I plan to take over the world. Thanks