VB 2008, Text Box in array txtName(0,0), txtName(0,1), etc.

In VB 6, one could have a one name for a number of text box controls but diffrentiated via index numbers like:

txtAcct(0)
txtAcct(1)
etc.

Is this possible in vb 2008? I need to create txtName(5,5)  <-- 36 controls with the same name.

Please add some comments beside a yes/no answer.

Thank you.
LVL 34
Mike EghtebasDatabase and Application DeveloperAsked:
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Mike TomlinsonConnect With a Mentor Middle School Assistant TeacherCommented:
Try this out...

To a blank form, add a Button, Label and a GroupBox:
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        GroupBox1.Controls.Clear()

        Dim tlp As New TableLayoutPanel
        tlp.ColumnCount = 6
        For c As Integer = 1 To tlp.ColumnCount
            tlp.ColumnStyles.Add(New ColumnStyle(SizeType.Percent, 100))
        Next
        tlp.RowCount = 6
        For r As Integer = 1 To tlp.RowCount
            tlp.RowStyles.Add(New RowStyle(SizeType.Percent, 100))
        Next
        tlp.Dock = DockStyle.Fill

        For r As Integer = 1 To tlp.RowCount
            For c As Integer = 1 To tlp.ColumnCount
                Dim tb As New TextBox
                tb.Name = "TextBox" & c.ToString("00") & r.ToString("00")
                tb.Dock = DockStyle.Fill
                tb.Multiline = True
                AddHandler tb.TextChanged, AddressOf TB_TextChanged
                tlp.Controls.Add(tb, c - 1, r - 1)
            Next
        Next

        GroupBox1.Controls.Add(tlp)
    End Sub

    Private Sub TB_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim tb As TextBox = CType(sender, TextBox)
        Label1.Text = tb.Name & ": " & tb.Text
    End Sub

End Class

Open in new window

Idle-Mind-374115.flv
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käµfm³d 👽Commented:
You can do the same in .NET:

    Dim txtName() As TextBox

--OR--

    Dim txtName(5, 5) As TextBox

for example.
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Mike TomlinsonMiddle School Assistant TeacherCommented:
Obviously you can create an array of controls, but "control arrays" don't exist natively in VB2008 like they did in VB6.

You can however make a sub react to multiple controls by either listing more than one control after the "Handles" keyword or by "wiring" them up at run-time using the AddHandler() method.  Instead of an "index" as in VB6, you instead use the "sender" parameter to determine which control was the source of the event (just cast it to the appropriate control type).
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käµfm³d 👽Commented:
Hmmm...  Seems I forgot about "control arrays" in VB6--I never used them that much. Good call Idle_Mind  :)
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
Hi Idle_Mind,

The metod you described is wonderful but I could use some code to get started. Let us say, we need to create an array of 6x 6 text boxes (to be created at run-time.

1- do I need them to be created, named, sized, etc, at run-time? If so, how is it done? The need to sit on top of a fram.
2- How the code for "AddHandler() method" is done?


Thank you,

Mike
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Mike TomlinsonMiddle School Assistant TeacherCommented:
Is this WinForms or WebForms?  (you mentioned a "frame")

Will it ONLY be a grid of 6x6 boxes or will the number be defined at run-time?

The best method really depends on the nature of the "grid'...
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
It is WinForms. I ment a group option frame. The text boxes when created will be on top of the border of the option group box (I call it frame here).

Six rows, on each row, 1st column a txtName, followed by txtNo1, txtNo2, ... txtNo5

I could use just text boxes but I though it maybe learn how to do this via code. A good to skill to have.

Mike
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
Idle_Mind,

Your code is wonderful.

How can I:

- set the first column text boxes to 130 width , 20 height.
- the rest to 29 width , 20 height.
- do I have any control on the gap between the text boxes? If so, how?

Alos, after a user enters the data in it, I want to store its data into a array variable

Public MyData(5,5) as String

If the project doen't make sense is because I am just testing some ideas and there is no actual project involved.

FYI, in my next question I will ask about:

How to read the data in these boxes (the text boxes use no events). I will use a save button to read and validate the data in 6x6 array of the text boxes and in an event there was an error, I will shade it yellow with some data describing the error in their tootip control (property). I will post this after receiving some possible response to my earlier question on this post.

Thank you,

Mike
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
The video is great. I am holding back on expressing my gratitude on how much I appreciate the quality and completeness of your responses, otherwise I will be writing endless about it.

Thanks.
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
Excellent.
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