HttpCookie aCookie;

string cookieName;

int limit = Request.Cookies.Count;

for (int i = 0; i < limit; i++)

{

cookieName = Request.Cookies[i].Name;

aCookie = new HttpCookie(cookieName);

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

//保存期限为昨天 浏览器发现过期 会自动释放

Response.Cookies.Add(aCookie);

}

Response.Redirect("Login.aspx");