This code ensures that the entry is converted to UPPER


private void txtIPallet_TextChanged (object sender, EventArgs e)
{
((TextBox)sender).Text = ((TextBox)sender).Text.ToUpper();
((TextBox)sender).SelectionStart = ((TextBox)sender).Text.Length;
}

Seasy when you know how
Thanks to whoever helped me

Ive also got the code for NUMERIC ONLY