Access Session Variables in Generic Handler in ASP.Net using C# and VB.Net

You need to inherit IRequiresSessionState Interface in the Generic Handler in order to access Session.

using System;
using System.Web;
using System.Web.SessionState;

public class HandlerCS : IHttpHandler, IRequiresSessionState
{
    public void ProcessRequest (HttpContext context) {
        string name = context.Session["Name"].ToString();
        context.Response.ContentType = "text/plain";
        context.Response.Write(name);
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }
}