Method of using session in ASHX (get session value) _ Practical Tips

Web development, in general handlers, it is easy to get the request and response objects, such as:

Copy Code code as follows:

HttpRequest _request = context. Request;

HttpResponse _response = context. Response;

But it's not that easy to get the value of the session.

For example, if you want to get the login user information saved in the session in Ashx session["Loginuser"]

If you only use the context. session["Loginuser"] is the exception that will report "an object reference is not set to an instance of an object"!

The following methods are used specifically:

Copy Code code as follows:

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Web;
Using System.Web.SessionState;

Namespace DtlCalendar.Mobile.Site.Manage
{
<summary>
Summary description of DELAPK
</summary>
public class Delapk:ihttphandler, ireadonlysessionstate
{
Ireadonlysessionstate: Read-only access session
IRequiresSessionState: Read-Write access session
public void ProcessRequest (HttpContext context)
{
String Strid = context. request["id"];
Context. Response.Clear ();
Context. Response.ContentType = "Text/plain";
int id;
string user;
if (int. TryParse (Strid, out IDs) && isloged (context, out user)
{
String reslt = DataProvider.MobileDataProvider.CreateInstance (). delmapk (ID). ToString ();
Bll. LogOprHelper.Instance.InsertMLog (user, BLL. Logopr.delete, "delapk result:" + reslt);
Context. Response.Write (RESLT);
}
Else
{
Bll. LogOprHelper.Instance.InsertMLog (Strid, BLL. Logopr.delete, "delapk result:-1");
Context. Response.Write ("-1");
}
}

private bool Isloged (HttpContext context, out string user)
{
Bll. User _user;
if (context. session["Loginuser"]!= null)
{
_user = context. session["Loginuser"] as BLL. User;
if (_user!= null)
{
user = _user.account;
return true;
}
}
user = string. Empty;
return false;
}

public bool IsReusable
{
Get
{
return true;
}
}
}
}