asp.net学习笔记·session基础

 

• 借助Cookie进行存取值；
• 值存在于服务器内存里面，在客户端进行修改没有影响，所以那是相当的安全；
• 所取值跟当前用户有关

模拟session类
public class SessionMoni

{

    private static IDictionary<string,IDictionary<string,object>> data = new Dictionary<string,IDictionary<string,object>>();

    public static IDictionary<string, object> GetSession(string sessionId)

    {

        if (data.ContainsKey(sessionId))

        {

            return data[sessionId];

        }

        else

        {

             IDictionary<string, object> session = new Dictionary<string, object>();

             data[sessionId] = session;

             return session;

 

        }

      

    }

      

}

 

设置取值小程序：

if (null ==Request.Cookies["mySessionId"])

        {

            string sessionId = Guid.NewGuid().ToString();

            Response.SetCookie(new HttpCookie("mySessionId", sessionId));

       }

   protected void Button2_Click(object sender, EventArgs e)

    {

        string sessionId = Request.Cookies["mySessionId"].Value;

        IDictionary<string, object> session = SessionMoni.GetSession(sessionId);

        this.Button2.Text = Convert.ToString(session["名字"]);

    }

    /// <summary>

    /// 取得session

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void Button3_Click(object sender, EventArgs e)

    {

        string sessionId = Request.Cookies["mySessionId"].Value;

        IDictionary<string, object> session = SessionMoni.GetSession(sessionId);

        session["名字"] = "许鸿飞";

    }