WebService.Session Property

The example below uses session state to determine how many times a particular session accesses the XML Web service method SessionHitCounter. In this example, the EnableSession property of the WebMethodAttribute is set to true in order to gain access to session state.

<%@ WebService Language="C#" Class="Util" %>

 using System.Web.Services;

 public class Util: WebService {
   [ WebMethod(Description="Per session Hit Counter",EnableSession=true)]
    public int SessionHitCounter() {
       if (Session["HitCounter"] == null) {
          Session["HitCounter"] = 1;
       }
       else {
          Session["HitCounter"] = ((int) Session["HitCounter"]) + 1;
          }
       return ((int) Session["HitCounter"]);
    }   
 }

.NET Framework

.NET Framework Client Profile

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference