//Add Subject public void addSubject() { try { Exam ex = new Exam(); ex.classID = Convert.ToInt64(ddlClasses.SelectedValue); ex.subjectName = txtSubject.Text; ex.current_Session = Session["Current_Session"].ToString(); string message = Edal.addSubject(ex); if (message.Contains("Sucessfully")) { lblSuccess.Text = message; lblError.Visible = false; lblSuccess.Visible = true; txtSubject.Text = ""; txtSubject.Focus(); } else { lblError.Text = message; lblError.Visible = true; lblSuccess.Visible = false; } } catch (Exception ex) { lblError.Text = ex.ToString(); lblError.Visible = true; lblSuccess.Visible = false; } }