3. WCF session Status

Project Structure:

Rhythmk. Contracts // Contract

Rhythmk. Services // Service

Rhythmk. wcfsvc // service host

Rhythmk. Test // Test

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Note: Object consistency can be ensured through session, and object consistency can be ensured through binding.Binding= "Wshttpbinding"Implement session Status

1. rhythmk. Contracts // Contract

 Using  System. servicemodel;

  ///  Sessionmode-gets or sets whether a session is allowed, not allowed, or required
  ///  Sessionmode. Allowed-specify that the Protocol also supports sessions when session binding is passed in (default)
 ///  Sessionmode. required-specify that the Protocol requires session binding. If the binding is not configured to support sessions, an exception is thrown.
  ///  Sessionmode. notallowed-specify that the Protocol never supports session binding.  
  [Servicecontract (sessionmode  =  Sessionmode. required, namespace  =  "  Http://wwww.wangkun.com  "  )]

  Public   Interface  Icalculate
{

  ///  Isinitiating-gets or sets a value that indicates whether the method can start a session (if any) on the server.
  ///  Isterminating-gets or sets a value that indicates whether the server closes the session after a service operation sends a reply message (if any.  
  [Operationcontract (isinitiating  =     True  , Isterminating  =    False  )]
  String  Getsessionid ();

[Operationcontract (isinitiating  =     True  , Isterminating  =     False  )]
  Void  Initnum ();

[Operationcontract (isinitiating  =    True  , Isterminating  =     False  )]
  Void  Addnum (  Int  X );

[Operationcontract (isinitiating  =     True  , Isterminating  =     False )]
  Int  Getnum ();


} 

2. rhythmk. Services // Service

 Using  Rhythmk. contracts;
  Using  System. servicemodel. activation;
  Using  System. servicemodel;
  ///     <Summary>  
  /// Calculator
  ///     </Summary>  
  ///    ///     <Summary>  
  ///  Interface to demonstrate session Status
  ///     </Summary>  
 ///     <Remarks>  
  ///  Instancecontextmode-gets or sets the value indicating when a new service object is created.
  ///  Instancecontextmode. persession-creates a new system. servicemodel. instancecontext object for each session.
  ///  The default value of instancecontextmode is instancecontextmode. persession.
  ///     </Remarks>  
 [Servicebehavior (instancecontextmode  =  Instancecontextmode. persession)]
[Aspnetcompatibilityrequirements (requirementsmode  =  Aspnetcompatibilityrequirementsmode. Required)]
  Public     Class  Calculate: icalculate
{

  # Region  Icalculate Member  

  Private    Int  _ Num;

  Public     String  Getsessionid ()
{
  Return  Operationcontext. Current. sessionid;
}

  Public     Void  Initnum ()
{
_ Num  =     0 ;
}

  Public     Void  Addnum (  Int  X)
{
_ Num  =  _ Num  +  X;
}

  Public     Int  Getnum ()
{
  Return _ Num;
}

  # Endregion  
} 

3. rhythmk. wcfsvc // service host

 
<%@ Servicehost Language="C #"Service="Rhythmk. Services. Calculate" %>
 

Configuration:

 <? XML version = "1.0" encoding = "UTF-8"  ?>  
  <  Configuration  >  
  <  System. servicemodel  >  
  <  Behaviors  >  
  < Servicebehaviors  >  
  <  Behavior  Name  = "Metabehavior"  >  
  <  Servicemetadata  Httpgetenabled  = "True"     />  
  </ Behavior  >  
  </  Servicebehaviors  >  
  </  Behaviors  >  
  <  Services  >  
  <  Service Name  = "Rhythmk. Services. Calculate"  Behaviorconfiguration  = "Metabehavior"     >  
  <  Endpoint  Address  = ""  
Binding  = "Wshttpbinding"  Bindingconfiguration  = ""  Contract = "Rhythmk. Contracts. icalculate"    >  
  </  Endpoint  >  
  <  Host  >  
  <  Baseaddresses  >  
  < Add  Baseaddress  = "Http: // localhost: 3654/One/wscalculate. SVC"  />  
  </  Baseaddresses  >  
  </  Host  >  
  </  Service  >  
 </  Services  >  
  </  System. servicemodel  >  
  </  Configuration  > 

4. rhythmk. Test // Test

Using system. servicemodel;

Namespace rhythmk. Test
{
Public partial class _ default: system. Web. UI. Page
{
Protected void page_load (Object sender, eventargs E)
{

If (! Page. ispostback)
{
If (session ["proxy"] = NULL)
{
Session ["proxy"] = new myservice. calculateclient ();
}
Myservice. icalculate proxy = session ["proxy"] As myservice. calculateclient;
Proxy. initnum ();

}
}

Protected void btnset_click (Object sender, eventargs E)
{
Myservice. icalculate proxy = session ["proxy"] As myservice. calculateclient;
Proxy. addnum (10 );

}

Protected void btnget_click (Object sender, eventargs E)
{
Myservice. icalculate proxy = session ["proxy"] As myservice. calculateclient;
Response. Write (proxy. getsessionid ());
Response. Write (proxy. getnum (). tostring ());
}
}
}