using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string us = Users.Text;
        string ps = Password.Text;
        if (checkusers(us, ps))
        {
            //FormsAuthentication.RedirectFromLoginPage(us,false);
            FormsAuthenticationTicket myTicket = new FormsAuthenticationTicket(
                1,
                us,
                System.DateTime.Now,
                System.DateTime.Now.AddDays(30),
                false,
                "admin",
                "/");
            string myEncrypt = FormsAuthentication.Encrypt(myTicket);
            HttpCookie myHttpCookie = new HttpCookie(FormsAuthentication.FormsCookieName, myEncrypt);
            this.Response.Cookies.Add(myHttpCookie);
            if (HttpContext.Current.Request["ReturnUrl"] == null)
            {
                this.Response.Redirect("default.aspx");
            }
            else
            {
                this.Response.Redirect(HttpContext.Current.Request["ReturnUrl"].ToString());
            }
            
        
        }
    }

    bool checkusers(string users, string password)
    {
        return true;
    }
}
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string name = getTicket().Name;
        this.Response.Write(name);
    }


    FormsAuthenticationTicket getTicket()
    {
        string FormsCookieName = FormsAuthentication.FormsCookieName;
        HttpCookie myHttpCookie = HttpContext.Current.Request.Cookies[FormsCookieName];
        if (myHttpCookie == null)
        {
            return null;

        }
        else {
            return FormsAuthentication.Decrypt(myHttpCookie.Value);
        }
    }
}