Determining which radiobutton within a Groupbox

  • Thread starter Thread starter Ricky W. Hunt
  • Start date Start date
R

Ricky W. Hunt

Is there an easy, flexible way to determine which radiobutton is checked
within a groupbox without having to code for each button explicitly? It
seems there would be some kind of index you could use but I can't find
anything in the VS help or on MSDN online.

Something like:

(pseudocode)

If grpBox1.item(3).checked then

or

Select Case grpBox1.Item
Case 1....


Also, if there is an index, and you have more than one row/column of
buttons, how are they numbered?


I also want to make sure they have checked a button within the group
(meaning it starts out with no radiobuttons checked; i.e. I don't want there
to be a "default"). Is there a way to make sure a radiobutton within the
group is checked without having to ask about each radiobutton explicitly?
 
Is there an easy, flexible way to determine which radiobutton is checked
within a groupbox without having to code for each button explicitly? It
seems there would be some kind of index you could use but I can't find
anything in the VS help or on MSDN online.
Click to expand...

No, there is nothing like this. Many people put code behind the buttons to
set a private variable, but there is simply nothing built-in to do this for
you.
 
Jeff Johnson said:
No, there is nothing like this. Many people put code behind the buttons to
set a private variable, but there is simply nothing built-in to do this for
you.
Click to expand...

Thanks.
 
Ricky,

Yes you can.

Beneath is an sample of my with checkboxes, it is alreaydy again old so
maybe there can be someting optimezed.

You can drag this on a new project and start to see it working. You can as
well create the technique by setting the radiobuttons using the designer
which needs a little different technique in creating the radiobutton array,
however try this first.

I hope this helps?

Cor

Private myCheckbox(10) As CheckBox
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
' makes 10 checkboxes
' you need for this to drag a button on a form
Dim start As Integer = 4
Dim top As Integer = 18
Dim i As Integer
For i = 1 To 10
myCheckbox(i) = New CheckBox
myCheckbox(i).TextAlign = ContentAlignment.MiddleCenter
myCheckbox(i).Width = 40
myCheckbox(i).Height = 20
myCheckbox(i).Location = New System.Drawing.Point(start, top)
myCheckbox(i).Text = i.ToString
myCheckbox(i).Cursor = Cursors.Hand
Me.Controls.Add(myCheckbox(i))
AddHandler myCheckbox(i).Click, AddressOf myCheckBox_Click
start = start + 40
If i = 5 Then
top = top + 20
start = 4
End If
Next
End Sub
Private Sub myCheckBox_Click _
(ByVal sender As Object, ByVal e As System.EventArgs)
Dim chk As CheckBox = DirectCast(sender, CheckBox)
MessageBox.Show(chk.Text)
End Sub
Private Sub Button1_Click _
(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles Button1.Click
Dim ctr As Control
Dim a As New System.Text.StringBuilder
a.Remove(0, a.Length)
Dim i As Integer
For i = 1 To 10
If myCheckbox(i).Checked Then
a.Append(i.ToString)
End If
Next
MessageBox.Show(a.ToString)
End Sub

I hope this helps a little bit?

Cor
 
Cor Ligthert said:
Ricky,

Yes you can.

Beneath is an sample of my with checkboxes, it is alreaydy again old so
maybe there can be someting optimezed.

You can drag this on a new project and start to see it working. You can as
well create the technique by setting the radiobuttons using the designer
which needs a little different technique in creating the radiobutton array,
however try this first.

I hope this helps?
Click to expand...

Got it. Thanks.
 
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