VIsual Basic

[jkusmanto]

Hi there !
I hope you guy who like Badminton also can help me in Visual Basic.
I am a beginner in VB .NET and have a problem.

My problem is :
I want to create 4 buttons (or other control), but all the 4 must be in an array, so the names must be like these : cntl(0), cntl(1), cntl(2) and cntl(3).

In VB6, I have no problem, because when I copy and paste the button (in design form), I will be askes, create in array or not. But in VB .NET, no question like that.
When I change the name of the control in its property to cntl(0) or button(1) enz, I got an error message, something like 'invalid name'.
So..... how to make the 4 buttons in an array ?

Please help me guys !!!!!

FYI : I use VB .NET Professional version 2003.

[bigredlemon]

i personally hate desining object arrays on those forms.

Why not just generate the buttons at runtime?

[jkusmanto]

Because I am new in VB .NET so I don't know how.
BigRedLemon, will you let me know how to generate the buttons at runtime ?

Thx.

[bigredlemon]

havent used MS compliers in awhile... is it server side or client side?

[jkusmanto]

Originally posted by bigredlemon
havent used MS compliers in awhile... is it server side or client side?

Actually can be in server and client side.
Can you explain in general ?

[bigredlemon]

Is the complier on your local computer or on a server's computer?
was is the file extension of your saved program?

[jkusmanto]

Wauhhh......
Let's make it simple Brl. I am new in VB .NET and still learning.

I create a new project in VB .NET.
I have a TextBox for enter a sentence that consist of max. 12 words and a button to get it starts.
The program should create (a) button(s) as many as the words in the sentence.
If the sentence consist of 5 words, so I got 5 buttons.
If the sentence consist of 10 words, so I got 10 buttons.

Just that Brl.

[bigredlemon]

different code is used depending on where the code is being compiled. The gist of it would be something like:

dim btnMyButtons(2) as array

For n = 0 to 2
dim btnMyButtons(n) as new System.Windows.Forms.Button()
btnMyButtons(n).property1 = some value
btnMyButtons(n).property2 = some value

Next n

The above code will not work, but you can reformat it with the right calls to make it work.

Btw, i thought all buttons had to be declared as btnSomeName as standard coding procedure... its what microsoft recommends to make the code readable

[badrad]

watch your FOR loop as it will exceed the array size.

[jkusmanto]

Brl,
I think we must write like this :

dim btnMyButtons(2) as array
For n = 0 to 1 Not --> for n = 0 to 2 (Thanks BadRad)
dim btnMyButtons(n) as new System.Windows.Forms.Button()
btnMyButtons(n).property1 = some value
btnMyButtons(n).property2 = some value
Next n

But I have red an article that say : VB .NET doesn't support controls array.
Does MyButtons(n) work ?

Hier you can read the article.

[bigredlemon]

Originally posted by badrad
watch your FOR loop as it will exceed the array size.

iirc array(2) makes an array or (0), (1), and (2).... I only have a java complier on this computer so i have no way of finding out for sure.... You can always declare a vector and not have to worry about array sizes.

[bigredlemon]

it doesn't even support control arrays?

Have you considered C++?

[bluejeff]

Originally posted by bigredlemon
it doesn't even support control arrays?

Have you considered C++?

Exactly, Microsoft is evil. C++ is definetely the way to go (with use of Linux or UNIX)

[jkusmanto]

Originally posted by bigredlemon
it doesn't even support control arrays?

Have you considered C++?

I stick to VB .NET
I don't like C++, if I have to choose between C++ and C#.
I will choose C#.
Anyway....... my problem is in VB .NET.

[badrad]

Originally posted by bigredlemon
iirc array(2) makes an array or (0), (1), and (2).... I only have a java complier on this computer so i have no way of finding out for sure.... You can always declare a vector and not have to worry about array sizes.

vb6 does allow the upper boundary (ie array(2) - {0,1,2)), but depending on which version of vb.net it might not (certain beta releases which I played with did not allow it (array(2) - {0,1) 2 was not allowed and returned "IndexOutOfRangeException". I think the current version fixed it to be consistent with vb6.

[Gamebird]

Give you a short code for this. I suppose you have one TextBox(named txtSentence) and one Button(named Button1) in your main form.

Eric

___________________________________________--

Private btns() As Button

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

Dim i As Integer
Dim counter As Integer = 0
Dim word() As String = txtSentence.Text.Split(" "c)

For i = 0 To word.Length - 1
If word(i).Trim <> "" Then
ReDim Preserve btns(counter)
btns(counter) = New Button()
btns(counter).Text = word(i)
btns(counter).Top = 200
btns(counter).Width = 50
btns(counter).Height = 20
btns(counter).Left = 50 + (counter * 70)
Me.Controls.Add(btns(counter))
AddHandler btns(counter).Click, AddressOf ResponseButtonClick
counter += 1
End If
Next

End Sub

Private Sub ResponseButtonClick(ByVal sender As System.Object, ByVal e As System.EventArgs)
MessageBox.Show(sender.text)
End Sub

[bigredlemon]

then you have the same problem as before... a control array, which is not supported by his complier