WCF步步为营(五):数据契约

1. WCF只能传输序列化的类型，WCF 能自动序列化.net内置的之类型，但是如果需要传输自定义的类型，必须把自定义的类型标注DataContract

DataContract标注这个类作为数据契约，DataMember属性指明那些字段公布为原数据，是否必需，顺序是多少。

2. 上面的定义，使得Student可以用在服务契约里，下面的Name可以让客户端的名称和服务端不同。

3. 下面是我们生成的代理类,可以看到客户端的名字，而且由于Student的Address未声明DataMember,所以客户端是不可见的

Code
<!---->//------------------------------------------------------------------------------

// <auto-generated>

//    This code was generated by a tool.

//    Runtime Version:2.0.50727.1433

//

//    Changes to this file may cause incorrect behavior and will be lost if

//    the code is regenerated.

// </auto-generated>

//------------------------------------------------------------------------------ 

namespace JackWangServiceClient.CalcService {

    using System.Runtime.Serialization;

    using System;   

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Runtime.Serialization", "3.0.0.0")]
    [System.Runtime.Serialization.DataContractAttribute(Name="Student", Namespace="http://schemas.datacontract.org/2004/07/JackWangWCFService")]
    [System.SerializableAttribute()]
    public partial class Student : object, System.Runtime.Serialization.IExtensibleDataObject, System.ComponentModel.INotifyPropertyChanged { 

        [System.NonSerializedAttribute()]
        private System.Runtime.Serialization.ExtensionDataObject extensionDataField; 
        private string FirstNameField;

        private string LastNameField;

        [System.Runtime.Serialization.OptionalFieldAttribute()]

        private int AgeField;

        [global::System.ComponentModel.BrowsableAttribute(false)]

        public System.Runtime.Serialization.ExtensionDataObject ExtensionData {

            get {

                return this.extensionDataField;

            }

            set {

                this.extensionDataField = value;

            }

        }

 

        [System.Runtime.Serialization.DataMemberAttribute(IsRequired=true)]

        public string FirstName {

            get {

                return this.FirstNameField;

            }

            set {

                if ((object.ReferenceEquals(this.FirstNameField, value) != true)) {

                    this.FirstNameField = value;

                    this.RaisePropertyChanged("FirstName");

                }

            }

        }

 

        [System.Runtime.Serialization.DataMemberAttribute(IsRequired=true)]

        public string LastName {

            get {

                return this.LastNameField;

            }

            set {

                if ((object.ReferenceEquals(this.LastNameField, value) != true)) {

                    this.LastNameField = value;

                    this.RaisePropertyChanged("LastName");

                }

            }

        }

 

        [System.Runtime.Serialization.DataMemberAttribute(Order=2)]

        public int Age {

            get {

                return this.AgeField;

            }

            set {

                if ((this.AgeField.Equals(value) != true)) {

                    this.AgeField = value;

                    this.RaisePropertyChanged("Age");

                }

            }

        }

 

        public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;

 

        protected void RaisePropertyChanged(string propertyName) {

            System.ComponentModel.PropertyChangedEventHandler propertyChanged = this.PropertyChanged;

            if ((propertyChanged != null)) {

                propertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));

            }

        }

    }

 

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

    [System.ServiceModel.ServiceContractAttribute(ConfigurationName="CalcService.CalcService")]

    public interface CalcService {

 

        [System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/CalcService/AddInt", ReplyAction="http://tempuri.org/CalcService/AddIntResponse")]

        long AddInt(int firstInt, int SecondInt);

 

        [System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/CalcService/addAgeOfStudent", ReplyAction="http://tempuri.org/CalcService/addAgeOfStudentResponse")]

        JackWangServiceClient.CalcService.Student addAgeOfStudent(JackWangServiceClient.CalcService.Student student);

    }

 

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

    public interface CalcServiceChannel : JackWangServiceClient.CalcService.CalcService, System.ServiceModel.IClientChannel {

    }

 

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

    public partial class CalcServiceClient : System.ServiceModel.ClientBase<JackWangServiceClient.CalcService.CalcService>, JackWangServiceClient.CalcService.CalcService {

 

        public CalcServiceClient() {

        }

 

        public CalcServiceClient(string endpointConfigurationName) :

                base(endpointConfigurationName) {

        }

 

        public CalcServiceClient(string endpointConfigurationName, string remoteAddress) :

                base(endpointConfigurationName, remoteAddress) {

        }

 

        public CalcServiceClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :

                base(endpointConfigurationName, remoteAddress) {

        }

 

        public CalcServiceClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :

                base(binding, remoteAddress) {

        }

 

        public long AddInt(int firstInt, int SecondInt) {

            return base.Channel.AddInt(firstInt, SecondInt);

        }

 

        public JackWangServiceClient.CalcService.Student addAgeOfStudent(JackWangServiceClient.CalcService.Student student) {

            return base.Channel.addAgeOfStudent(student);

        }

    }

}

 

 

4. 客户端调用示例：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ServiceModel;

using JackWangServiceClient.CalcService;

namespace JackWangServiceClient

{

    class Program

    {

        static void Main(string[] args)

        {

            CalcServiceClient proxy = new CalcServiceClient();

            long result = proxy.AddInt(50, 60);

            Student myStudent = new Student();

            myStudent.FirstName = "Jack";

            myStudent.LastName = "Wang";

            myStudent.Age = 18;

            Student resultStudent = proxy.addAgeOfStudent(myStudent);

            Console.Out.WriteLine("result from server is:" + result);

            Console.Out.WriteLine(resultStudent.FirstName + "," + resultStudent.LastName + "," + resultStudent.Age);

            Console.ReadLine();

        }

    }

}