C# 自定义 Class 在 WCF 服务中不工作

Question

问题
我有一项新的 WCF 服务。其中有一个 Interface 和相关的 class，只有两个方法，如以下代码所示。我在其中一种方法中使用自定义 class CompanyDetail 但出现问题，我在我的客户端项目中引用了此服务但没有任何效果。服务已连接但无法在代码中使用。

我试过的

namespace IntelliWcfService
{
    [ServiceContract]
    public interface IIntelliService
    {
        [OperationContract]
        CompanyDetail GetCompanyDetails();

        [OperationContract]
        string Get(int value);
    }
}

接口实现

namespace IntelliWcfService
{
    public class IntelliService : IIntelliService
    {
        public CompanyDetail GetCompanyDetails()
        {
            try
            {
                var company = new CompanyDetail
                {
                    CompanyName = "Visual Labs Pakistan",
                    City = "Multan",
                    Contact1 = "0306-8513103",
                    Contact2 = "",
                    Country = "Pakistan",
                    CountryCode = "+92",
                    Email = "VisualLabs@gmail.com",
                    NTN = "0007923-7",
                    PostalCode = "60000",
                    Street = "Street 2 Near Bypass Multan",
                    Type = "Software Technology"
                };

                return company;
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                throw;
            }
        }

        public string Get(int value)
        {
            return "Connected";
        }
    }
}

公司详情Class

using System.Runtime.Serialization;

namespace IntelliWcfService.Models
{
    [DataContract] 
    public class CompanyDetail
    {
        private string _companyName;
        private string _ntn;
        private string _type;
        private string _country;
        private string _countryCode;
        private string _city;
        private string _street;
        private string _postalCode;
        private string _contact1;
        private string _contact2;
        private string _email;

        [DataMember]
        public string CompanyName
        {
            get => _companyName;
            set => _companyName = value;
        }

        [DataMember]
        public string NTN
        {
            get => _ntn;
            set => _ntn = value;
        }

        [DataMember]
        public string Type
        {
            get => _type;
            set => _type = value;
        }

        [DataMember]
        public string Country
        {
            get => _country;
            set => _country = value;
        }

        [DataMember]
        public string CountryCode
        {
            get => _countryCode;
            set => _countryCode = value;
        }

        [DataMember]
        public string City
        {
            get => _city;
            set => _city = value;
        }

        [DataMember]
        public string Street
        {
            get => _street;
            set => _street = value;
        }

        [DataMember]
        public string PostalCode
        {
            get => _postalCode;
            set => _postalCode = value;
        }

        [DataMember]
        public string Contact1
        {
            get => _contact1;
            set => _contact1 = value;
        }

        [DataMember]
        public string Contact2
        {
            get => _contact2;
            set => _contact2 = value;
        }

        [DataMember]
        public string Email
        {
            get => _email;
            set => _email = value;
        }
    }
}

我已经尝试过使用 [DataMember] 装饰器的自动属性并且喜欢这个完整的道具。但仍然没有任何效果。并在我的客户端中获取它。

结果

我已经在这里寻求帮助，但看来我没有做错任何事情。

Adding classes to WCF service library
https://docs.microsoft.com/en-us/dotnet/framework/wcf/feature-details/using-data-contracts

观察
当我删除 GetCompnyDetails 的这种方法时，一切正常，我可以在我的客户端中使用其他方法。同样在过去，我曾经有 EntityFramework 自动生成的模型在服务中并且曾经工作正常。

预期行为
显然我应该能够在我的客户端项目中使用所有方法。并且这个自定义 class 应该起作用，这是导致问题的原因。

添加服务引用对话框

Answer 1

我用你的代码创建了一个 WCF 服务，它运行成功了。

namespace ConsoleApp37
{
    [ServiceContract]
    public interface IIntelliService
    {
        [OperationContract]
        CompanyDetail GetCompanyDetails();

        [OperationContract]
        string Get(int value);
    }
    [DataContract]
    public class CompanyDetail
    {
        private string _companyName;
        private string _ntn;
        private string _type;
        private string _country;
        private string _countryCode;
        private string _city;
        private string _street;
        private string _postalCode;
        private string _contact1;
        private string _contact2;
        private string _email;

        [DataMember]
        public string CompanyName
        {
            get => _companyName;
            set => _companyName = value;
        }

        [DataMember]
        public string NTN
        {
            get => _ntn;
            set => _ntn = value;
        }

        [DataMember]
        public string Type
        {
            get => _type;
            set => _type = value;
        }

        [DataMember]
        public string Country
        {
            get => _country;
            set => _country = value;
        }

        [DataMember]
        public string CountryCode
        {
            get => _countryCode;
            set => _countryCode = value;
        }

        [DataMember]
        public string City
        {
            get => _city;
            set => _city = value;
        }

        [DataMember]
        public string Street
        {
            get => _street;
            set => _street = value;
        }

        [DataMember]
        public string PostalCode
        {
            get => _postalCode;
            set => _postalCode = value;
        }

        [DataMember]
        public string Contact1
        {
            get => _contact1;
            set => _contact1 = value;
        }

        [DataMember]
        public string Contact2
        {
            get => _contact2;
            set => _contact2 = value;
        }

        [DataMember]
        public string Email
        {
            get => _email;
            set => _email = value;
        }
    }
    public class IntelliService : IIntelliService
    {
        public CompanyDetail GetCompanyDetails()
        {
            try
            {
                var company = new CompanyDetail
                {
                    CompanyName = "Visual Labs Pakistan",
                    City = "Multan",
                    Contact1 = "0306-8513103",
                    Contact2 = "",
                    Country = "Pakistan",
                    CountryCode = "+92",
                    Email = "VisualLabs@gmail.com",
                    NTN = "0007923-7",
                    PostalCode = "60000",
                    Street = "Street 2 Near Bypass Multan",
                    Type = "Software Technology"
                };

                return company;
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                throw;
            }
        }

        public string Get(int value)
        {
            return "Connected";
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            // Step 1: Create a URI to serve as the base address.
            Uri baseAddress = new Uri("http://localhost:8000/GettingStarted/");

            // Step 2: Create a ServiceHost instance.
            ServiceHost selfHost = new ServiceHost(typeof(IntelliService), baseAddress);

            try
            {
                // Step 3: Add a service endpoint.
                selfHost.AddServiceEndpoint(typeof(IIntelliService), new WSHttpBinding(), "CalculatorService");

                // Step 4: Enable metadata exchange.
                ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
                smb.HttpGetEnabled = true;
                selfHost.Description.Behaviors.Add(smb);

                // Step 5: Start the service.
                selfHost.Open();
                Console.WriteLine("The service is ready.");

                // Close the ServiceHost to stop the service.
                Console.WriteLine("Press <Enter> to terminate the service.");
                Console.WriteLine();
                Console.ReadLine();
                selfHost.Close();
            }
            catch (CommunicationException ce)
            {
                Console.WriteLine("An exception occurred: {0}", ce.Message);
                selfHost.Abort();
            }
        }
    }
}

这是 server-side 代码。

客户端根据服务器端点生成代理class调用服务

我成功调用了 GetCompanyDetails 方法并打印了城市的值属性。

更新

根据您的描述，我创建了一个 UWP 程序来调用 WCF，如下所示：

这是ButtonBase_OnClick:

private async void ButtonBase_OnClick(object sender, RoutedEventArgs e) {
            BasicHttpBinding binding = new BasicHttpBinding();
            EndpointAddress endpointAddress = new EndpointAddress("http://localhost:8000/GettingStarted/CalculatorService");
            ServiceReference1.IntelliServiceClient intelliServiceClient = new ServiceReference1.IntelliServiceClient(binding,endpointAddress);
            ServiceReference1.CompanyDetail companyDetail= await intelliServiceClient.GetCompanyDetailsAsync();
            MessageDialog message = new MessageDialog(companyDetail.City);
            await message.ShowAsync();
        }

Answer 2

您的客户端项目似乎无法引用自定义类型。

自定义类型可能是完整的。 NET项目和clinet是。净芯.

尝试将引用配置为不重用引用类型

因此它们将在您的客户端项目中生成并可以使用。

另一种选择是将您的自定义类型和合同分开。 Net 标准 2.0 项目，并受到客户和服务的尊重。您可以选中 'reuse' 复选框。

在大多数情况下，在您有解决方案内参考的情况下，重用是有意义的，这就是它被预先选择的原因。

这是link to the offical doc

C# 自定义 Class 在 WCF 服务中不工作

C# Custom Class is not working in WCF service

c#

wcf