private void InitInformation(STUDENT student)
        {
            // Khởi tạo các giá trị ban đầu
            lbDOB.Text = ((DateTime)student.DOB).ToString("dd/MM/yyyy");
            if (student.GENDER == 1)
            {
                lbGender.Text = "Nam";
            }
            else
            {
                lbGender.Text = "Nữ";
            }
            lbStudentId.Text   = student.STUDENTID;
            lbStudentName.Text = student.STUDENTNAME.ToUpper();
            lbAddress.Text     = student.ADDRESSS;
            lbCMND.Text        = student.CMND;
            lbDepartment.Text  = student.DEPARTMENT;
            lbFolk.Text        = student.FOLK;
            lbIssuedBy.Text    = student.ISSUEDBY;
            lbNation.Text      = student.NATION;
            lbPhoneNumber.Text = student.PHONENUMBER;
            lbReligion.Text    = student.RELIGION;
            lbStudyAt.Text     = student.STUDYAT;
            lbStudyYear.Text   = student.STUDENTYEAR.ToString();
            lbEmail.Text       = student.EMAIL;
            lbDateCMND.Text    = ((DateTime)student.DATECMND).ToString("dd/MM/yyyy");

            if (student.PHOTO != "")
            {
                avatarBox.Image = new Bitmap(CommonUsing.ImagePath() + student.PHOTO);
            }
        }
        private void InitInformation(STUDENT student)
        {
            // Khởi tạo các giá trị ban đầu
            txtStudentId.Text   = student.STUDENTID;
            txtFullName.Text    = student.STUDENTNAME;
            txtAddress.Text     = student.ADDRESSS;
            txtCMND.Text        = student.CMND;
            txtDepartment.Text  = student.DEPARTMENT;
            txtFolk.Text        = student.FOLK;
            txtIssuedBy.Text    = student.ISSUEDBY;
            txtNation.Text      = student.NATION;
            txtPhoneNumber.Text = student.PHONENUMBER;
            txtReligion.Text    = student.RELIGION;
            txtSchool.Text      = student.STUDYAT;
            txtYear.Text        = student.STUDENTYEAR.ToString();
            txtEmail.Text       = student.EMAIL;

            if (student.GENDER == 1)
            {
                cbbGender.SelectedItem = "Nam";
            }
            else
            {
                cbbGender.SelectedItem = "Nữ";
            }
            dob.Value      = (DateTime)student.DOB;
            dateCMND.Value = (DateTime)student.DATECMND;
            if (student.PHOTO != "")
            {
                avatarBox.Image = new Bitmap(CommonUsing.ImagePath() + student.PHOTO);
            }
            lbImageName.Text   = student.PHOTO;
            lbInformation.Text = "";
        }
        private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                // Xác thực thông tin nhập vào
                if (txtStudentId.Text == "")
                {
                    lbInformation.Text = "Thông báo lỗi: " + MessageDefine.StudentIdNull;
                    return;
                }


                // thêm thông tin sinh viên sau chỉnh sửa vào csdl
                STUDENT student = new STUDENT();
                student.STUDENTID   = txtStudentId.Text;
                student.STUDENTNAME = txtFullName.Text;
                student.DOB         = dob.Value;

                if (cbbGender.SelectedItem.ToString().Equals("Nam"))
                {
                    student.GENDER = 1;
                }
                else
                {
                    student.GENDER = 2;
                }

                student.RELIGION    = txtReligion.Text;
                student.FOLK        = txtFolk.Text;
                student.ADDRESSS    = txtAddress.Text;
                student.CMND        = txtCMND.Text;
                student.DATECMND    = dateCMND.Value;
                student.ISSUEDBY    = txtIssuedBy.Text;
                student.NATION      = txtNation.Text;
                student.PHONENUMBER = txtPhoneNumber.Text;
                student.STUDYAT     = txtSchool.Text;
                student.STUDENTYEAR = int.Parse(txtYear.Text);
                student.DEPARTMENT  = txtDepartment.Text;
                student.PHOTO       = lbImageName.Text;
                student.STATUSS     = 1;
                student.EMAIL       = txtEmail.Text;

                db.Entry(student).State = System.Data.Entity.EntityState.Modified;
                db.SaveChanges();

                // Upload file ảnh avatar vào hệ thống
                if (avatarPath != "")
                {
                    File.Copy(avatarPath, CommonUsing.ImagePath() + Path.GetFileName(avatarPath), true);
                }

                MessageBox.Show("Chỉnh sửa thông tin sinh viên thành công", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.Close();
                StudentManage studentManage = new StudentManage();
                studentManage.Show();
            }
            catch (Exception ex)
            {
                lbInformation.Text = ex.Message;
            }
        }