输入字符串的格式不正确.at System.Number.ParseDecimal DB2.执行数据集

当我尝试在 db2 服务器中执行数据集时，我收到此异常。最奇怪的是单元测试代码不会引发异常，但是当我尝试使用相同的参数从网页调用它时，它会引发异常。

这是我的单元测试代码：

[Test]
        public void Get_the_car_details_via_the_chassisnumber_WVWZZZ1KZCW240208()
        {
            //Arrange
            string chassisNumber = "WVWZZZ1KZCW240208";
            string brand = "skoda";

            //Act
            Vehicle car = VehicleDA.GetVehicle(chassisNumber, "", brand).GetResult();
            //Assert
            Assert.IsNotNull(car);
            car.Type.ShouldBe("VOLKSWAGEN GOLF");
        }

这是我从页面调用它的方式，如您所见，我硬编码了相同的参数，但它仍然不起作用

public Vehicle GetVehicleInformation(string chassis, string commissionnumber, string brand)
        {
            Vehicle car = VehicleDA.GetVehicle("WVWZZZ1KZCW240208", commissionnumber, "skoda").GetResult();

这是 dal 中的数据库代码

public class VehicleDA
    {
        public static ResultForType<Vehicle> GetVehicle(string chassisNumber, string commissionNumber, string brand)
        {
            if (chassisNumber.Length != 17 && chassisNumber.Length > 0)
            {
                chassisNumber = new ChassisNumberSearch().GetCompleteChassisNumber(chassisNumber);
                if (chassisNumber == string.Empty)
                {
                    return CreateReturnWithError("Unknown chassis number");
                }
            }

            if (chassisNumber == string.Empty)
            {
                chassisNumber = GetTheLatestChassisNumberInCaseOfMultipleChassisNumbers(new ChassisNumberSearch().GetChassisNumber(commissionNumber));
                if (chassisNumber == string.Empty)
                {
                    return CreateReturnWithError("Unknown commision number");
                }
            }

            var vehicleXMLString = new VehicleSearch().GetVehicle(chassisNumber);
            if (GetDateTimeDataFor("DFACUSI", vehicleXMLString) < DateTime.Now.AddYears(-2))
            {
                return CreateReturnWithError("Vehicle is older then 2 years");
            }
            if ( GetDateTimeDataFor("DFACTUR", vehicleXMLString) == DateTime.MinValue)
            {
                return CreateReturnWithError("Invoice date is not filled in");
            }

            var vehicle = new Vehicle
                                  {
                                      Chassis = chassisNumber,
                                      ComissionNumber = GetDataFor("NCOMMIS", vehicleXMLString),
                                      Type = GetDataFor("LMAKTYP", vehicleXMLString),
                                      Year = GetIntDataFor("CANNMOD", vehicleXMLString),
                                      OrderDate = GetDateTimeDataFor("D705DAT", vehicleXMLString),
                                      InvoiceDate = GetDateTimeDataFor("DFACTUR", vehicleXMLString),
                                      InvoiceNumber = GetDataFor("NFACTUR", vehicleXMLString),
                                      DeliveryDate = GetDateTimeDataFor("DLIVRAI", vehicleXMLString),
                                      RegistrationDate = GetDateTimeDataFor("DIMMFIR", vehicleXMLString),
                                      CataloguePrice = GetDecimalDataFor("VPRICAT", vehicleXMLString),
                                      InvoicePrice = GetDecimalDataFor("VPRIFAC", vehicleXMLString),
                                      Code = GetDataFor("CINTERM", vehicleXMLString)
                                  };
            var result = new ResultForType<Vehicle>(vehicle);
            if (!vehicle.Type.ToLower().StartsWith(brand.ToLower()))
            {
                result.AddWarning("Brand of the dealer is different from the brand of the vehicle");
            } 
            if (vehicle.RegistrationDate < DateTime.Now.AddMonths(-3))
            {
                result.AddWarning("Registration date is older then 3 months");
            }
            //"Registration date is older then 3 months"

            return result;
        }
 public class VehicleSearch : DB2Base
    {
        public string GetVehicle(string chassisNumber)
        {
            const string procName = "CALL DBSP.xxx(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
            var cmd = DB2Database.GetStoredProcCommand(procName);
            cmd.CommandType = CommandType.Text;
            if (chassisNumber.Length > 17)
            {
                chassisNumber = chassisNumber.Substring(0, 17);
            }
            CreateInputParameter("CFONCTI", cmd, "RB");
            CreateInputParameter("CFORMAT", cmd, "X");
            CreateInputParameter("CLANGUE", cmd, "E");
            CreateInputParameter("FEXTEND", cmd, "Y");
            CreateInputParameter("NCHASSI", cmd, chassisNumber);
            CreateStringParameter("LLIGXML", cmd, 250);
            CreateStringParameter("CIDFVAR", cmd, 10);
            CreateStringParameter("LVALVAR", cmd, 250);
            CreateStringParameter("CEQUIPE", cmd, 4);
            CreateStringParameter("CEQUPAC", cmd, 4);
            CreateStringParameter("LEQUCOUF", cmd, 30);
            CreateStringParameter("LEQUCOUN", cmd, 30);
            CreateStringParameter("LEQUCOUD", cmd, 30);
            CreateStringParameter("LEQUCOUE", cmd, 30);
            CreateStringParameter("LEQULONF", cmd, 120);
            CreateStringParameter("LEQULONN", cmd, 120);
            CreateStringParameter("LEQULOND", cmd, 120);
            CreateStringParameter("LEQULONE", cmd, 120);
            CreateStringParameter("CTYPOPT", cmd, 1);
            CreateStringParameter("CCATOPT", cmd, 1);
            CreateStringParameter("CEQUGEN", cmd, 4);
            CreateDecimalParameter("VHTVAXX", cmd, 10);
            CreateStringParameter("CRETOUR", cmd, 2);
            CreateStringParameter("LMSGERR", cmd, 70);
            CreateStringParameter("LSPPROG", cmd, 8);
            CreateStringParameter("LSPPARG", cmd, 30);
            CreateSmallIntParameter("CSPRETC", cmd, 2);
            CreateIntParameter("CSQLAST", cmd, 4);
            CreateStringParameter("LSQLMSG", cmd, 70);
            var dataset = DB2Database.ExecuteDataSet(cmd);
            var result = new StringBuilder();
            if (dataset.HasRowsInTheFirstTable())
            {
                foreach (DataRow row in dataset.Tables[0].Rows)
                {
                    result.Append(row[0]);
                }
            }
            return result.ToString();
        }