private void SetSelectedClass_Quang(DataGridViewCellEventArgs e)
{
string value = null;
DataTable dt = StudentDAO.GetListClassesByStudentID_Quang(dataGridViewStudent.Rows[e.RowIndex].Cells["StudentID"].Value.ToString());
//class ID class Name
foreach (DataRow row in dt.Rows)
{
value = row["ClassID"].ToString();
}
cbxClassName.SelectedValue = value;
}
