[RESOLVED] [VB.NET-VS2010] Limit the number of digits in a NumericUpDown

I have a numericupdown with a minimum set at 0 and a maximum at 100. However, at run-time a user may input an infinite number by skipping the arrows and inputting numbers with keys. I have tried to solve this myself but my error message won't popup until the user presses the enter key.

Code:

---

    Private Sub spnMiscQty_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles spnMiscQty.ValueChanged
        If spnMiscQty.Value = 100 Then
            MessageBox.Show("Pick a Quantity between 1 and 100")
        Else
        End If
    End Sub

---

What I would really like to do to by-pass this issue is to limit the number (cannot enter a value greater than '100') or to disallow a cursor to be placed in the NumericUpDown (user would only be allowed to use the arrows to select a number).

Thanks in advance for any help you may provide.

Why? Let the user choose, then change the query to:

If spnMiscQty.Value > 100 or spnMiscQty.Value < 0 Then ...

I posted the wrong code. That code was to check if the message box was working before I found out about the Enter key initiating the msgbox. I did have spnMiscQty.Value > 100 before that.

I do not want the user to be able to choose a quantity above 100 because this program needs to be airtight. No room for error with my bosses...even user error.

Thanks for your quick reply David.

Instead of using valuechanged event, use the Keypress event and trap them there....

Have a look at this thread, it explains why this happens :

http://www.vbdotnetforums.com/window...html#post20621

It is the default behaviour. If you want to change that, you will need to make a custom NumericUpDown ( your own ). Not sure if it will be a worthwhile effort

That's very interesting. I guess I never really took the time to play around with NumericUpDowns before this week. I guess I will leave it as is.

Thanks for the article Hannes!