Code to check all text boxes

[aspfun]

I used code below to check all text boxes but never work.
All the textboxes directly on the form
What is wrong? (I want to force user to input data into all text boxes)

Private Sub ValidateTextBoxes()
For Each ctrl As Control In Me.Controls
If TypeOf ctrl Is TextBox Then
Dim txtBox As TextBox = CType(ctrl, TextBox)
If txtBox.Text.Length = 0 Then
MsgBox("All fields are required")
Exit Sub
End If
End If
Next
End Sub

Hi, ChrisE ,
Your code did not work.

H, techgnome,
Yes, All the textboxes directly on the form.

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[ChrisE]

Hi,

this will change the Background if the Textbox is empty...

 Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Call ColorTextboxIfEmpty(Me)
    End Sub

    Private Shared Sub ColorTextboxIfEmpty(ByRef frm As System.Windows.Forms.Form)
        For Each ctrl As Control In frm.Controls
            If TypeOf ctrl Is TextBox Then
                If DirectCast(ctrl, TextBox).Text = String.Empty Then
                    ctrl.BackColor = Color.Tomato
                End If
            End If
        Next
    End Sub

regards
Chris

[techgnome]

Are all the textboxes directly on the form? Or do they reside in containers like a tab page, group box, or something like that? If that's the case, then the problem is that you're only iterating through the form's controls. After checking to see if it's a textbox, if it isn't, you need to check the .Controls property of that control, to see if there are any controls in it, and if so, process that group and so on and so on and on and on.... perfect time to learn about recurrsion.

-tg

[ChrisE]

[COLOR="#FF0000"]Hi, ChrisE ,
Your code did not work.

then the Textbox isn't empty, it should work just fine, add a new Textbox to you form and try it again



Tg- has a valid point if there are Panels ; Tabpages etc...


regards
Chris