private void txtApellido_KeyPress(object sender, KeyPressEventArgs e) { Validar.Letras(e); }
private void txtNota_KeyPress(object sender, KeyPressEventArgs e) { Validar.NumerosDecimal(e); }
private void txtNombre_KeyPress(object sender, KeyPressEventArgs e) { Validar.Letras(e); }
private void txtEdad_KeyPress(object sender, KeyPressEventArgs e) { Validar.Numeros(e); }