public void UpdateFinalScore(string Sname, string C_Sname) {//修改FinalScore表的成绩
SqlConnection conn = new SqlConnection(Properties.Settings.Default.GradeManagementSystemConnectionString);
SqlCommand comm = new SqlCommand("update FinalScore set " + C_Sname + " = '0' where Sname='" + Sname + "' ", conn);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
}