Yannik here Yannik here - 2 months ago 13x
ASP.NET (C#) Question

Why I cannot delete a cookie?

I have following code in my


public ActionResult MyPage()
if (HttpContext.Request.Cookies["User"] == null)
//Create cookie
return RedirectToAction("MyPage", "Home");
string User = HttpContext.Request.Cookies["User"].Value;
foreach (var user in Data.MyUsers)
if (user.username == User)
//Do some stuff
return View("MyPage");
//HttpContext.Response.Cookies.Remove("User"); works not sorry ;(
return RedirectToAction("MyPage", "Home");

Problem: The application don’t delete the cookie (why ever) and run in a loop because the application doesn’t find the user in the data. (The problem is not that the application doesn’t find the user, the problem is the cookie-issue)

Question: How I can fix this issue because in another project of me I works fine. I copy and pasted the code from my other project in my new project, but in the new project it will not work. Yes I use the same version of the asp.net framework :)

Hope you can help me… I’m at the end of my knowhow about c#....

Thank you very much.


Use Expire Property, and set negative value to it, this will expires the cookie i.e in your word this will removed from cookies list.

String cookieName = Request.Cookies["User"].Name;
HttpCookie userCookie = new HttpCookie(cookieName);
userCookie.Expires = DateTime.Now.AddDays(-1);