WCF中的消息合同 [英] Message contract in WCF

问题描述

我添加了一个消息合同类，如下所示

 [MessageContract] 
  public  < span class =code-keyword> class 凭证
 {
  private   string  key =  String  .Empty; 
  private   string  val =  String  .Empty; 
 
 [MessageBodyMember（
 Name =   test，
 Namespace =   http://www.examples.com 
）] 
  public   string 键
 {
 获取 {返回键; } 
  set  { this  .key =  value ; } 
} 
 
 [MessageHeader（
 Name =   testval ，
 Namespace =   http://www.examples.com 
）] 
  public   string  Val 
 {
  get  { return  val; } 
  set  { this  .val =  value ; } 
} 
} 

添加了如下服务合同

 [ServiceContract ] 
  public   interface  IService1 
 {
 
 [ OperationContract] 
 Hashtable GetHeader（）; 
 
 Credential obj 
 {
 [OperationContract] 
  get ; 
 [OperationContract] 
  set ; 
} 
  //   TODO：在此处添加服务操作 
 } 

现在在WCF服务中我正在实现该属性

  public   class  Service1：IService1 
 {
  private 凭证_obj; 
  public 凭据obj 
 {
 获取 { return  _obj; } 
  set  {_ obj =  value ; } 
} 
 
  public  Hashtable GetHeader（）
 {
 Hashtable ht =  new  Hashtable（）; 
  foreach （MessageHeaderInfo h  in  OperationContext.Current.IncomingMessageHeaders）
 {
 ht.Add（h.Name，h.ToString（））; 
} 
  return  ht; 
} 
} 

现在在客户端我试图设置如下的消息合约对象。

< pre lang =c＃> localhost.Service1 obj = new localhost.Service1（）;
localhost.Credential objCredential = new localhost.Credential（）;
objCredential.test = test;
obj.set_obj（objCredential）;
obj.GetHeader（）;

但是肥皂标题看起来似乎没有我赋予objCredential.test的值。为什么会这样？

解决方案

嗨Buddy，

您使用属性作为操作合同，这就是为什么r不能在soap中获取值。

创建属性作为操作合同是不可取的。

使用属性作为Datamember，如下面的链接所示

http://stackoverflow.com/questions/556775/wcf-datamember-attribute-on-property-vs-member [ ^ ]



请参考以下链接中的wcf教程（注意：在Internet Explorer中打开链接）

http://wcftutorial.net/Data-Contract.aspx [ ^ ]

I added a message contract class like below

[MessageContract]
    public class Credential
    {
        private string key = String.Empty;
        private string val = String.Empty;

        [MessageBodyMember(
          Name = "test",
          Namespace = "http://www.examples.com"
        )]
        public string Key
        {
            get { return key; }
            set { this.key = value; }
        }

        [MessageHeader(
          Name = "testval",
          Namespace = "http://www.examples.com"
        )]
        public string Val
        {
            get { return val; }
            set { this.val = value; }
        }
    }

Added a Service contract like below

[ServiceContract]
    public interface IService1
    {

        [OperationContract]
        Hashtable GetHeader();

        Credential obj
        {
            [OperationContract]
            get;
            [OperationContract]
            set;
        }
        // TODO: Add your service operations here
    }

Now in the WCF service i am implementing the property

public class Service1 : IService1
    {
        private Credential _obj;
        public Credential obj
        {
            get { return _obj; }
            set { _obj = value; }
        }

        public Hashtable GetHeader()
        {
            Hashtable ht = new Hashtable();
            foreach (MessageHeaderInfo h in OperationContext.Current.IncomingMessageHeaders)
            {
                ht.Add(h.Name, h.ToString());
            }
            return ht;
        }
    }

Now in the client i am trying to set the message contract object like below.

localhost.Service1 obj = new localhost.Service1();
            localhost.Credential objCredential = new localhost.Credential();
            objCredential.test = "test";
            obj.set_obj(objCredential);
            obj.GetHeader();

But the soap header never seems to have the value i assigned to " objCredential.test".Why is it so?

解决方案

Hi Buddy,
You r using property as operation contract that''s why do r not getting values in soap.
Creating property as operation contract is not advicible.
Use property as Datamember as explained in below link
http://stackoverflow.com/questions/556775/wcf-datamember-attribute-on-property-vs-member[^]

Please refer wcf tutorial on below link (Note: Open link in Internet Explorer)
http://wcftutorial.net/Data-Contract.aspx[^]

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