private void button3_Click(object sender, EventArgs e)
        {
            HospitalDBControlEntities dbContext = new HospitalDBControlEntities();

            var q = dbContext.Employees.Where(n => n.EmployeeId == LoginForm.UserId).Select(n => n);

            try
            {
                foreach (var n in q)
                {
                    n.FirstName = firstNameTextBox.Text;
                    n.LastName  = lastNameTextBox.Text;
                    n.Account   = accountTextBox.Text;
                    n.Birthday  = birthdayDateTimePicker.Value;

                    if (Check.HasChinese(emailTextBox.Text) || !Check.IsValidEMailAddress(emailTextBox.Text))
                    {
                        MessageBox.Show("Email欄位錯誤");
                    }
                    else
                    {
                        n.Email = emailTextBox.Text;
                    }

                    n.Occupation = occupationTextBox.SelectedItem.ToString();
                    n.Department = departmentTextBox.SelectedItem.ToString();
                }
                dbContext.SaveChanges();
                MessageBox.Show("修改成功!", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information);

                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }