Index of a control in .NET ?

[Antoine]

Hello,

 

I've worked with Visual Basic 6 for a long time, and now I'm trying to get VB .NET working. But, I cannot find the "Index" property in de properties windows.

 

E.g.

 

I want to create (during designtime), 7 labels with indexes 0 to 6....

 

How can I do this ? Is this function renamed or something, I can't find anything on MSDN either

 

Regards,

Antoine

[Volte]

Control arrays no longer exist in .NET; you can make arrays of controls, but only through code, like so:

Dim myLabel(6) As Label
Dim i As Integer

For i = 0 to 6
 myLabel(i) = New Label()
 With myLabel(i)
   .Location = New Point(10, i * 18)
   .Size = New Size(150, 18)
   'other property settings and stuff
 End With

 Me.Controls.Add(myLabel(i))
Next

[Antoine]

That's bad....... :(

 

But thanks for your information !

[Nerseus]

Here's an article that may help:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vstechart/html/controlarrays.asp

 

-nerseus

[Antoine]

Thanks that works :D Edited August 26, 2003 by Antoine

[Antoine]

Okay,

 

I have created 12 buttons during runtime, now I want to add some activity to them. How can I generate an event when clicking a run-time created button ?

 

THanks allready !

 

Antoine

[divil]

Use the AddHandler statement to assign a method in your code to an event on a control created at runtime. If you look AddHandler up in the help there should be an example.

[mutant]

You need to have a sub that accepts the right arguments for the event you wish to have and add a handler using AddHandler:

AddHandler object.Event, AddressOf subthatwill handle

[Antoine]

Yes I did that, but is that possible on an array to ?

 

Regards,

Antoine

[wyrd]

I don't think so, but you can always try. If not, you'll have to loop through all the objects in the array and do it that way.

[Antoine]

I don't think so, but you can always try. If not, you'll have to loop through all the objects in the array and do it that way.

 

I allready thought so :( , from my opinion VB.NET really sucks.... but I don't have a choice :-\ . But thank you for the information. I've tried it but then I have to make e.g. 12 "Sub's" for an array, while I could have made it in one if array's would've worked....

 

Thank you all for your information !!!

 

Regards,

Antoine

[divil]

You can still use one sub to handle all the controls in the array, I don't understand what your problem is. You were shown how to assign events using AddHandler, you can do this for as many controls as you like for the same subroutine.

[dynamic_sysop]

here's a quick example i made for you :)

   Private WithEvents buttons As Button

   Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
       Dim Button1(11) As Button, i As Integer
       
       For i = LBound(Button1) To UBound(Button1)
           Button1(i) = New Button()
           If i = 0 Then
               Button1(i).Location = New System.Drawing.Point(8, 32)
           ElseIf i >= 0 And i <= 5 Then
               Button1(i).Location = New System.Drawing.Point(Button1(i - 1).Location.X + Button1(i).Width, 32)
           ElseIf i = 6 Then
               Button1(i).Location = New System.Drawing.Point(8, 64)
           Else
               Button1(i).Location = New System.Drawing.Point(Button1(i - 1).Location.X + Button1(i).Width, 64)
           End If
           MyBase.Controls.Add(Button1(i))
           Button1(i).Tag = i
           Button1(i).Text = "Button1(" & i & ")"
           AddHandler Button1(i).Click, AddressOf buttons_Click
       Next
   End Sub

   Private Sub buttons_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles buttons.Click
       Dim btn As Button = DirectCast(sender, Button) '/// buttons now work as an array.
       MessageBox.Show("i was clicked by ... " & btn.Tag)
   End Sub

[Antoine]

Great thanks, sorry for the late reply, but I was out for a few days !

 

I will try that !!

 

Regards,

Antoine

[Antoine]

Hey, that works nicely !

 

Grtz,

Antoine