public void IncreseGrade()
{
string str = "Update Grade set Years= Years+1; Update Grade9 set Years= Years+1";
DM.ExecuteNonQuery(str);
}
public void IncreseGrade()
{
string str = "Update Grade set Years= Years+1; Update Grade9 set Years= Years+1";
DM.ExecuteNonQuery(str);
}