How to get the cookie value in asp.net website

Question

I am creating a cookie and storing the value of username after succesfull login. How can I access the cookie when the website is opened. If the cookie exist I want to fill the username text box from the cookie value. And how to decrypt the value to get the username. I am doing server side validation by getting the userdetails from the database. I am using vs 2010 with c#

FormsAuthenticationTicket tkt; string cookiestr; HttpCookie ck; tkt = new FormsAuthenticationTicket(1, txtUserName.Value, DateTime.Now,     DateTime.Now.AddYears(1), chk_Rememberme.Checked, "User Email"); cookiestr = FormsAuthentication.Encrypt(tkt); ck = new HttpCookie(FormsAuthentication.FormsCookieName, cookiestr);  if (chk_Rememberme.Checked) {     ck.Expires = tkt.Expiration;     ck.Path = FormsAuthentication.FormsCookiePath;     Response.Cookies.Add(ck); } 

cookie is created with name as .YAFNET_Authentication and content is encrypted

Webconfig:

  <forms name=".YAFNET_Authentication" loginUrl="Home.aspx"   protection="All" timeout="15000" cookieless="UseCookies"/> 

Answer 1

You may use Request.Cookies collection to read the cookies.

if(Request.Cookies["key"]!=null) {    var value=Request.Cookies["key"].Value; } 

Answer 2

FormsAuthentication.Decrypt takes the actual value of the cookie, not the name of it. You can get the cookie value like

HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName].Value; 

and decrypt that.