Azure序列化中的DTO问题

时间:2011-03-22 09:13:39

标签: .net azure azure-sql-database

起初我想为我的英语道歉

我遇到了DTO问题,我正在使用SQLAzure作为我的数据库而我在Azure上托管服务

我的一些对象有ICollection的其他对象,通常是一个国家(Country Table)有一组机场(Airport Table),我使用Entity Framework for DB Connection和DTO来呈现我的对象

这一点一切都很好,但在客户端,当我想使用对象的属性Icollection,VS说“模糊名称”时,似乎在序列化期间它重新输入我的对象

我在服务器端有DTOAirport

序列化后我在客户端有两种类型的机场 首先是airportservice.airportClient.DTOAirport 第二个是countryService.countryClient.DTOAirport

我不能使用我的经典DTOAirport而且它不支持演员......

我有很多问题,我没有“经典WCF服务”

如果你愿意,我可以发布代码

非常感谢您阅读我

{
[DataContract]
public class DTOAirport
{
    [DataMember]
    public int IdAirportDTO { get; set; }

    [DataMember]
    public string NameAirportDTO { get; set; }

    [DataMember]
    public string IATACodeDTO { get; set; }

    [DataMember]
    public string ICAOCodeDTO { get; set; }

    [DataMember]
    public string ZoneDTO { get; set; }

    [DataMember]
    public int FKCountryDTO { get; set; }

    [DataMember]
    public string CityDTO { get; set; }

    [DataMember]
    public double LatitudeDTO { get; set; }

    [DataMember]
    public double LongitudeDTO { get; set; }

    [DataMember]
    public Nullable<int> AltitudeDTO { get; set; }
}

}

{
[DataContract]
public class DTOCountry
{
    [DataMember]
    public int IdCountryDTO { get; set; }

    [DataMember]
    public string NameCountryDTO { get; set; }

    [DataMember]
    public ICollection<DTOAirport> AirportsListDTO { get; set; }
}

}

以下是我的DTO,我使用mapper将它映射到Entity Framework类

这是服务器端的典型服务

        public DTOAirport GetAirportById(int idAirport)
    {
        using (FlexAzureContainer1 context = new FlexAzureContainer1())
        {
            DTOAirport airport = new DTOAirport();
            airport = DTOAirportMapper.MapFrom(context.DM_AIRPORTS.Where(a => a.IdAirport == idAirport).FirstOrDefault());
            return airport;
        }
    }

        public DTOCountry GetCountryById(int idCountry)
    {
        using (FlexAzureContainer1 context = new FlexAzureContainer1())
        {
            DTOCountry country = new DTOCountry();
            country = DTOCountryMapper.MapFrom(context.DM_COUNTRIES.Where(c => c.IdCountry == idCountry).FirstOrDefault());
            return country;
        }
    }

这是客户端的控制台测试以及它给我带来的错误

public class Program
{
    static AirportService.AirportServiceClient myAirportService = new AirportService.AirportServiceClient();
    static CountryService.CountryServiceClient myCountryService = new CountryService.CountryServiceClient();

    public static void Main(string[] args)
    {
         List<DTOAirport>airportsList = myCountryService.GetCountryById(1).AirportsListDTO.ToList();
        DTOCountry country = myCountryService.GetCountryById(1);    
        DTOAirport airport = myAirportService.GetAirportById(1);
        foreach (DTOAirport airport2 in country.AirportsListDTO.ToList())
        {
            Console.WriteLine(airport2.NameAirportDTO);
        }
        Console.WriteLine(country.NameCountryDTO);
        Console.WriteLine(airport.NameAirportDTO);
        Console.ReadLine();

    }
}

}

Error   1   Cannot implicitly convert type 'System.Collections.Generic.List<FlexinergieAircraft.Client.CountryService.DTOAirport>' to 'System.Collections.Generic.List<FlexinergieAircraft.Client.DTOAirport>'  D:\Projects\FlexinergieAicraft.OldVersions\FlexinergieAircraft17\FlexinergieAircraft\FlexinergieAircraft.Client\FlexinergieAircraft.Client\Program.cs   17  45  FlexinergieAircraft.Client

Error   2   Cannot implicitly convert type 'FlexinergieAircraft.Client.CountryService.DTOCountry' to 'FlexinergieAircraft.Client.DTOCountry'    D:\Projects\FlexinergieAicraft.OldVersions\FlexinergieAircraft17\FlexinergieAircraft\FlexinergieAircraft.Client\FlexinergieAircraft.Client\Program.cs   18  34  FlexinergieAircraft.Client

Error   3   Cannot implicitly convert type 'FlexinergieAircraft.Client.AirportService.DTOAirport' to 'FlexinergieAircraft.Client.DTOAirport'    D:\Projects\FlexinergieAicraft.OldVersions\FlexinergieAircraft17\FlexinergieAircraft\FlexinergieAircraft.Client\FlexinergieAircraft.Client\Program.cs   19  34  FlexinergieAircraft.Client

如果您还需要其他东西

在这个例子中我在客户端测试了DTO,结果是一样的,似乎服务重新输入了对象

也许它是代理,但是我在很长一段时间内一直在研究azure和.NET

1 个答案:

答案 0 :(得分:1)

您的错误消息的路径包含&#34; .oldversions&#34;。

客户端和服务器是否有两种不同的版本?

另外我看到你有一个可以为空的int,有时可以为空的类型可能是个问题。为了以防万一,您可以在没有此字段的情况下尝试。