public void selectedStuRowDetails() { if (isSelected == true) { Student objUpdateStudens = new Student(); objUpdateStudens.StudentID = SelectedStudentID; objUpdateStudens.firstName = txtFirstName.Text; objUpdateStudens.universityID = txtUniversityID.Text; objUpdateStudens.age = Convert.ToInt32(txtAge.Text); objUpdateStudens.adress = txtAdress.Text; objUpdateStudens.dateOfBirth = dtpBirthDate.Value; objUpdateStudens.ObjDepartment = new Department(); objUpdateStudens.ObjDepartment.DepartmentID = Convert.ToInt32(cmbDepartment.SelectedValue); systemManager objsystemManagerUpdateSem = new systemManager(); if (updateSelected == true) { objsystemManagerUpdateSem.UpdateStudentDetails(objUpdateStudens); } if (deleteSelected == true) { objsystemManagerUpdateSem.DeleteStudentDetails(objUpdateStudens); } } }