Hi,

I'm new to .NET, I have a Numeric text box want to accept only numbers. I have put code into KeyDown and KeyPress event. But events are not triggering at all. Any help please?

Below is the code:
<code>
Private Sub txtNumber_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtNumber.KeyDown
blnNumericNo = False
If e.KeyCode < Keys.D0 OrElse e.KeyCode > Keys.D9 Then
If e.KeyCode <> Keys.Back Then
blnNumericNo = True
End If
End If
End Sub

Private Sub txtNumber_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtNumber.KeyPress
' Debug.Print(e.KeyChar)
If Not blnNumericNo Then

e.Handled = True
End If
End Sub

</code>

You can check the code after input with a regex command

Or check input with javascript as keys are pressed.
I use the following to convert a user name to uppercase dynamically.
It can look a little weird in practice as it always puts the focus at the end of the field but it works.


<asp:TexBox ID="UserName" runat="server" onChange="changeToUpperCase(this.id")
onyeyup="changeToUpperCase(this.id) " > < /asp:textbox>


<script language="Javascript" type="text/javascript">
function changeToUpperCase(UserName)
{
document.getElementId(UserName).value = document.getElementId(UserName).value.toUpperCase( );
}


You will need to change the to uppercase bit to allow only numbers.