protected void EnrollCoursesButton_Click(object sender, EventArgs e) { EnrollCourse _EnrollCourse = new EnrollCourse(); _EnrollCourse.DepartmentId = Convert.ToInt32(DepartmentDropDownList.SelectedValue); _EnrollCourse.DeptCode = DepartmentDropDownList.SelectedItem.ToString(); _EnrollCourse.StudentRegNo = StudentRegNoDropDownList.SelectedItem.ToString(); _EnrollCourse.EnrollDate = DateTime.Now.ToShortDateString(); _EnrollCourse.CourseCode = CoursesDropDownList.SelectedValue.ToString(); _EnrollCourse.CourseName = CoursesDropDownList.SelectedItem.ToString(); _EnrollCourse.StudentId = Convert.ToInt32(StudentRegNoDropDownList.SelectedValue); decimal AlreadyCourseAssign = _EnrollCourseManager.AlreadyCourseAssign(_EnrollCourse); if (AlreadyCourseAssign >= 1) { ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('This Code Already Enroll');", true); } else { int success = _EnrollCourseManager.EnrollCourse(_EnrollCourse); if (success > 0) { ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Succssefully Enroll Course');", true); } else { ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Failed Enroll ');", true); } } }