How to set remember me cookie .net c# ?

protected void SetRememberMeCookie()

        {

            HttpCookie Cookie = Request.Cookies["LoginCookies"];

            if (chkRemember.Checked)

            {

                if (Request.Browser.Cookies)

                {

                    if (Cookie == null) Cookie = new HttpCookie("LoginCookies");

                    Cookie["UserID"] = txtUserID.Text.Trim();

                    Cookie.Expires = DateTime.Now.AddDays(30);

                    Response.Cookies.Add(Cookie);

                }

            }

            else

            {

                if (Cookie == null) Cookie = new HttpCookie("LoginCookies");

                Cookie.Expires = DateTime.Now.AddDays(-1);

                Response.Cookies.Add(Cookie);

            }

        }

After that call this function on LogIn button click like this:-

// Set Cookie

   SetRememberMeCookie();