>>>Set Textbox.Max.Length =2, TextBox.CharacterCasing = CharacterCasing.Upper
>>
>>Is there anything similar to force the first character entered in a text box to upper case and the rest can be mixed case?
>>
>>similar to VFP's InputMask = "!XXXX"
>
>Not tested:

protected override void OnKeyUp(System.Windows.Input.KeyEventArgs e)
>       {
>         base.OnKeyUp(e);
>         if (this.Text.Length == 1)
>         {
>           this.Text = this.Text.ToUpper();
>           this.CaretIndex = 1;
>         }
>       }

>
>Update: Thinking about it - that won't work if the user backs up (for example by using left arrow). Maybe somewhere else (eg. LostFocus:

protected override void OnLostFocus(RoutedEventArgs e)
>       {
>         Text = Text.Substring(0, 1).ToUpper() + Text.Substring(1);
>         base.OnLostFocus(e);
>       }

Thanks, I'll try stuff like this out. I wonder how come simple things like this weren't included as standard.