private void btnTeacherDelete_Click(object sender, EventArgs e)
{
FormTeacherInfo teacherinsert = new FormTeacherInfo();
teacherinsert.Show();
hideSubMenu();
}
private void bthTeacherGridView_Click(object sender, EventArgs e)
{
FormTeacherInfo tinfo = new FormTeacherInfo();
tinfo.Show();
}
