Code the
keypress
event of the textboxes. Allow numbers, the backspace key,
and the decimal point. Only write the code once and use Handles.
Private Sub TextBox1_KeyPress(sender As Object, e As KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = ControlChars.Back Then
MessageBox.Show("error")
e.Handled = True
End If
End Sub
Jump to Postyou can leverage some of the methods in the Char class for this:
If Char.IsNumber(e.KeyChar) OrElse e.KeyChar = Chr(Keys.Back) OrElse e.KeyChar = "."c Then End If
you can leverage some of the methods in the Char class for this:
If Char.IsNumber(e.KeyChar) OrElse e.KeyChar = Chr(Keys.Back) OrElse e.KeyChar = "."c Then
End If
hmmm when I type a number on the textbxo1 i cant :(
This is a duplicate of the same question in VB.NET. You should not create threads in multiple forums for the same question because it just confuses everyone.
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