在WebService方法中使用Session

aspx页面

 

EnableSessionService.asmx页面

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

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
using System.Web.SessionState;

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class EnableSessionService  : System.Web.Services.WebService
{
    [WebMethod(EnableSession = true)]//需要添加的标记及属性EnableSession=true
    public int AddOne()
	{
		HttpSessionState session = HttpContext.Current.Session;//创建一个session对像
		object objValue = session["value"];
		int value = objValue == null ? 0 : (int)objValue;
		value++;
		session["value"] = value;
		return value;
    }
    
}