switch (Chk_SearchType.CheckState)
        {
           case CheckState.Indeterminate:
                {
                    MessageBox.Show("Test");
                    Chk_SearchType.Text = "fsdfsdsfsd";// SearchTypeEnum.All.ToString();
                }
                break;
            case CheckState.Unchecked:
                {
                    Chk_SearchType.Text = SearchTypeEnum.Car.ToString();
                }
                break;
            case CheckState.Checked:
                {
                    Chk_SearchType.Text = SearchTypeEnum.Truck.ToString();
                }
                break;

            default:
                break;
        }