Delete browser cookie using C#.Net,Asp.Net

Introduction:

In my previous article I have explained about How to Add httpcookie using C#.net. In this article I am going to explain about how to delete the browser cookies using C#.Net code.

Explanation:

You cannot directly delete a cookie on a user's computer. However, you can direct the user's browser to delete the cookie by setting the cookie's expiration date to a past date. 

To assign a past expiration date on a cookie

1.      Determine whether the cookie exists, and if so, create a new cookie with the same name.

2.      Set the cookie's expiration date to a time in the past.

3.      Add the cookie to the Cookies collection object.

Below is the method  used to delete the cookie.

protected void DeleteCookie(string cookiename)

{

    if (Request.Cookies[cookiename] != null)

    {

        HttpCookie myCookie = new HttpCookie(cookiename);

        myCookie.Expires = DateTime.Now.AddDays(-1d);

        Response.Cookies.Add(myCookie);

    }

}

Sample usage of the method is given below.

DeleteCookie("name");

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