How to delete HttpCookie object value in class file in C#

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I assign a cookie like below

string sKey = txtUName.Text + txtPwd.Text;
HttpCookie uidpwd = new HttpCookie("uidpwd");
 uidpwd.Value = sKey;
Response.Cookies.Add(uidpwd);

so want to delete it in class file like below

HttpContext.Current.Request.Cookies["uidpwd"].Expires = DateTime.Now.AddSeconds(1);

but throwing an error " Object reference not set to an instance of an object"

Posted 24-Jun-15 1:42am

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F-ES Sitecore · Answer 1 · 2015-06-24T02:08:00

I googled "asp.net delete cookie" and this was the first result

https://msdn.microsoft.com/en-us/library/ms178195(v=vs.140).aspx[^]

Posted 24-Jun-15 2:08am