private void StudentNameInput_KeyPress(object sender, KeyPressEventArgs e) { if ((((e.KeyChar < 'A') || (e.KeyChar > 'z')) && !(e.KeyChar == ' ') && !(e.KeyChar == '.') && !(Char.IsControl(e.KeyChar))) || (textBox1.Text.Length > 35)) { e.Handled = true; } if (e.KeyChar == (char)Keys.Enter) { StudentNameInput.Focus(); } }