private void setDataSourceToGrid()
        {
            //here um setting the data source for this data grid
            dgvStudentDetails.DataSource = null;
            systemManager  objsystemManager = new systemManager();
            List <Student> lstStudent       = new List <Student>();

            lstStudent = objsystemManager.GetStudentBasicData();
            StudentDetails        objStudentDetails;
            List <StudentDetails> lstStudentDetails = new List <StudentDetails>();

            foreach (var item in lstStudent)
            {
                objStudentDetails                = new StudentDetails();
                objStudentDetails.firstName      = item.FullName;
                objStudentDetails.age            = item.age;
                objStudentDetails.dateOfBirth    = item.dateOfBirth;
                objStudentDetails.universityID   = item.universityID;
                objStudentDetails.StudentID      = item.StudentID;
                objStudentDetails.adress         = item.adress;
                objStudentDetails.DepartmentName = item.ObjDepartment.DepartmentName;
                objStudentDetails.DepartmentID   = item.ObjDepartment.DepartmentID;
                lstStudentDetails.Add(objStudentDetails);
            }


            dgvStudentDetails.DataSource = lstStudentDetails;
        }
        //method which loads the studentID and name into the combobox.
        public void setCmbStudent()
        {
            systemManager objsystemManager = new systemManager();

            cmbStudentID.DataSource    = objsystemManager.GetStudentBasicData();
            cmbStudentID.ValueMember   = "StudentID";
            cmbStudentID.DisplayMember = "universityID";


            //because of this department combo's display inedex will shown as a blank index
            cmbStudentID.SelectedIndex = -1;
        }