Textbox can only accept numbers

[johncassell]

Hi all,

can someone tell me how to restrict users to only entering numbers into a textbox.

I know it needs to be in this part but not sure what the code should be..

Private Sub WorkstationTextBox_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles WorkstationTextBox.KeyPress
    End Sub

any help is greatly appreciated.

Thanks

John

 

[johncassell]

Well i said i knew it had to be in the keypress event but that shows how much i knew..

code which worked for me...

Private Sub WorkstationTextBox_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles WorkstationTextBox.KeyUp
        If Not IsNumeric(WorkstationTextBox.Text) Then
            MsgBox("This box only accepts numbers 0-9.")
        End If
    End Sub

 

[johncassell]

Actually, spoke to soon. The way I have done it, makes a pop up box appear but when the user presses enter, it brings the box straight back up without gicing the user chance the re-enter anything.

Using the mouse to click the box gets rid of it but i'd rather not leave the user to work that out.

Any ideas anyone?

Thanks

John

 

[SRocks]

Restrict Users only to enter numbers

The following code wont allow user to enter any characters other than numeric characters-------

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If Not IsNumeric(e.KeyChar) Then
e.Handled = True
End If
End Sub

 

[JuggaloBrotha]

why not just use the NumericUpDown control for this, then all you need to do is specify the minimum and maximum allowed