[RESOLVED] Control arrays

[vishalmarya]

I am Using Vb6 for quite a few years but new to vb.net.

Vb.net does not have control arrays .


Control arrays provided :


1. adding controls to an array at runtime .

2. Removing controls From an array at runtime .

3. changing properties of the controls by looping through the array.

4. using a single procedure event for all the members of the control array.


What is the best method to implement this In vb.net

[jmcilhinney]

The question of control arrays is a well worn one around here, so forum search should yield quite a few results. I did find a couple of articles on MSDN just the other day that may be of interest to you and others on the subject.

http://msdn.microsoft.com/library/de...visualcnet.asp
http://msdn.microsoft.com/library/de...trolarrays.asp

[Ideas Man]

Yeah, have a search on this site because as jmcilhinney said, it's been done to death. They were convenient but after a while you do find better ways around them. However, if you've searched and the info hasn't helped, then feel free to continue your pursuit here and I'll help you out.

[wossname]

In .net you can have an array of anything you want. Fact. Controls are just classes like anything else.

[vishalmarya]

Thanks jmcilhinney . I read the msdn link.

But i have a problem.

Lets say . I have a requirement where label controls need to be added at runtime and i don't know beforehand that how many will be required and
ofcourse what their name be.

If we see this code :


Private Sub AddEmailAddress()
Dim txtEmail As New TextBox
Dim lblEmail As New Label
' Set the desired properties
txtEmail.Top = txtAddress.Top + txtAddress.Height + 10
txtEmail.Left = txtAddress.Left
lblEmail.Text = "Email"
lblEmail.Location = New Point(lblAddress.Location.X, _
txtEmail.Location.Y)
' Add to the collection
tpAddress.Controls.Add(txtEmail)
tpAddress.Controls.Add(lblEmail)

AddHandler txtEmail.Enter, AddressOf ProcessEnter

End Sub


adding controls at runtime and creating their event handlers is Fine , But i don't know what purpose this code will solve.

Because If i know i have to add A textbox and A label , i would not do that at runtime .

I want to add controls at runtime and their number can depend on a variable.

How to do that ?

[jmcilhinney]

Use a loop and do this the number of times that your variable prescribes. You will presumably need to have some method of setting their Location based on the value of the loop counter. You can add these controls to an array or collection, other than the form's Controls collection, as they are created if you want. You can then access them using that array or collection without having to allow for the other controls on the form.

[taxes]

Hi,

Control Arays have NOT dissapeared from .NET. It is the Control Index Number property which is no longer available.

The following thread in the forum code bank gives you all you are asking for.

http://www.vbforums.com/showthread.php?t=328100

[vishalmarya]

Thanks taxes.

That was exactly what i was looking for.

[taxes]

Glad to have helped. Sorry I did not see your post sooner