WCF實例變量得到由一個單獨的實例改變

Question

我有作爲配置一個WCF：

ConcurrencyMode = ConcurrencyMode.Multiple, 
InstanceContextMode = InstanceContextMode.PerSession 

我有一個全局變量來定義的，我希望在整個會議期間保持其價值，它持有該值。

我已經用來初始化該變量和保持其值的一個實例（說123） 我已經用來初始化該變量和保持其值的另一實例（456說）

然而，在第二實例初始化之後變量，第一個實例（會話）的值變成456！這不是預期的！

有什麼我在這裏失蹤？

Answer 1

它應該正常工作 - 重新檢查您的代碼如下。

服務合同：

[ServiceContract] 
public interface IService1 
{  
    [OperationContract] 
    string GetData();  
} 

服務實現

[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Multiple)] 
public class Service1 : IService1 
{ 
    int i = 0; 

    public string GetData() 
    { 
     i++; 
     return string.Format("Instance number: {0}", i); 
    }  
} 

現在要求用同一實例的服務會給遞增值「INT I」從的GetData但對於新的實例將開始與1.

查看以下來自客戶的電話

using (var client = new HttpProxy.Service1Client("NetTcpBinding_IService1")) 
{ 
    Console.WriteLine("Response {0}", client.GetData()); 
    Console.WriteLine("Response {0}", client.GetData()); 
} 

using (var client2 = new HttpProxy.Service1Client("NetTcpBinding_IService1")) 
{ 
    Console.WriteLine("Response {0}", client2.GetData()); 
    Console.WriteLine("Response {0}", client2.GetData()); 
} 

using (var client = new HttpProxy.Service1Client("WSHttpBinding_IService1")) 
{ 
    Console.WriteLine("Response {0}", client.GetData()); 
    Console.WriteLine("Response {0}", client.GetData()); 
} 

與CreateChannel創建代理實例

var binding = new NetTcpBinding(); 
        var address = new EndpointAddress("net.tcp://localhost:8523/Service1"); 
        var channelFactory = new ChannelFactory<WcfServLib.IService1>(binding, address); 

        WcfServLib.IService1 proxy = channelFactory.CreateChannel(); 

        Console.WriteLine(proxy.GetData()); 
        Console.WriteLine(proxy.GetData()); 


        channelFactory = new ChannelFactory<WcfServLib.IService1>(binding, address); 
        proxy = channelFactory.CreateChannel(); 

        Console.WriteLine(proxy.GetData()); 
        Console.WriteLine(proxy.GetData()); 

        channelFactory.Close(); 

服務實現

[ServiceBehavior(InstanceContextMode= InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Multiple)] public class Service1 : IService1 { int i = 0; public string GetData() 
    { 
     return string.Format("SessionID:{0}, Local variable i:{1}", OperationContext.Current.SessionId, i++); 
    }   
}