private void buttonTimeSearch_Click(object sender, EventArgs e)
        {
            List <string> TempBookedTimeList, TempTimeList;

            comboBoxTimeChoice.Items.Clear();

            TempBookedTimeList = Controller.ControllerGetBookedTime(Convert.ToDateTime(dateTimePickerDate.Value).ToString("yyyy-MM-dd"), DoctorArray[comboBoxDoctorChoice.SelectedIndex, 0]);
            TempTimeList       = Controller.ControllerGetTime();

            TimeArray = new string[TempTimeList.Count / 2, 2];
            if (TempBookedTimeList.Count >= 1)
            {
                for (int i = 0; i < TempBookedTimeList.Count / 2; i++)
                {
                    for (int j = 0; j < TempTimeList.Count / 2; j++)
                    {
                        if (TempTimeList[(j * 2)] == TempBookedTimeList[(i * 2) + 1])
                        {
                            TempTimeList.RemoveAt((j * 2));
                            TempTimeList.RemoveAt((j * 2));
                        }
                    }
                }
            }

            for (int i = 0; i < TempTimeList.Count / 2; i++)
            {
                TimeArray[i, 0] = TempTimeList[(i * 2)];
                TimeArray[i, 1] = TempTimeList[(i * 2) + 1];
                comboBoxTimeChoice.Items.Add(TimeArray[i, 1]);
            }
            comboBoxTimeChoice.SelectedIndex = 0;
            TimeCheck = true;
        }