C# WebService中管理状态

 

using System.Web.Services;

public class ServerUsage : WebService {
   [ WebMethod(Description="Number of times this service has been accessed.") ]
   public int ServiceUsage() {
     // If the XML Web service method hasn't been accessed,
     // initialize it to 1.
     if (Application["appMyServiceUsage"] == null) 
     {
       Application["appMyServiceUsage"] = 1;
     }
     else
     {
     // Increment the usage count.
       Application["appMyServiceUsage"] = ((int) Application["appMyServiceUsage"]) + 1;
     }
     return  (int) Application["appMyServiceUsage"];
   }

   [ WebMethod(Description="Number of times a particualr client session has accessed this XML Web service method.",EnableSession=true) ]
   public int PerSessionServiceUsage() {
     // If the XML Web service method hasn't been accessed, initialize
     // it to 1.
     if (Session["MyServiceUsage"] == null) 
     {
       Session["MyServiceUsage"] = 1;
     }
     else
     {
     // Increment the usage count.
       Session["MyServiceUsage"] = ((int) Session["MyServiceUsage"]) + 1;
     }
     return  (int) Session["MyServiceUsage"];
   }
}

 

参考资料：Managing State in XML Web Services Created Using ASP.NET