private void araçKiralamaAraYüzüToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Carlisting userInterFace = new Carlisting();

            userInterFace.UserId = AdminId;
            userInterFace.Show();
            this.Hide();
        }
        private void btnGoBackCarListing_Click(object sender, EventArgs e)
        {
            Carlisting carlisting = new Carlisting();

            carlisting.UserId = UserId;
            carlisting.Show();
            this.Hide();
        }
        private void btnFinish_Click(object sender, EventArgs e)
        {
            int birthdate = dtpckerBirthDate.Value.Year;
            int today     = DateTime.Now.Year;
            int year      = today - birthdate;

            if (!helper.PanelControl(pnlCustomerRentForm) || txtUserIdentity.TextLength != 11 || year < 18)
            {
                MessageBox.Show("Lütfen bilgilerinizi eksiksiz doldurunuz, (18 yaşından küçükler işlem yapamaz.) ");
            }
            else
            {
                customer.Name       = txtUserName.Text.Trim().ToUpper();
                customer.LastName   = txtUserSurname.Text.Trim().ToUpper();
                customer.IdentityNo = txtUserIdentity.Text.Trim();
                customer.BirthDate  = dtpckerBirthDate.Value;
                customer.City       = txtUserCity.Text.Trim().ToUpper();

                if (customerController.AddUserRentDetailController(customer))
                {
                    rentedDetail.FirstRentDate  = FirstRentDay;
                    rentedDetail.LastRentDate   = LastRentDay;
                    rentedDetail.CarId          = CarId;
                    rentedDetail.UserId         = UserId;
                    rentedDetail.CountOfRentDay = RentDay;
                    rentedDetail.TotalRentPrice = TotalPrice;
                    rentedDetail.CutomerId      = customerController.GetCustomerIdController(customer);
                    CarUpdate();
                    rentedContoller.AddUserDetailContoller(rentedDetail);


                    DialogResult dialogResult = MessageBox.Show("Kiralama işlem başarı ile gerçekleşti tekrar araba kiralamak ister misiniz? ", "Bilgi", MessageBoxButtons.YesNo);
                    if (dialogResult == DialogResult.Yes)
                    {
                        Carlisting carlisting = new Carlisting();
                        carlisting.UserId = UserId;
                        carlisting.Show();
                        this.Close();
                    }
                    else if (dialogResult == DialogResult.No)
                    {
                        userInterFace.UserId = UserId;
                        userInterFace.Show();
                        this.Hide();
                    }
                }
            }
        }