.net清除cookie代码|.net为什么不能清除cookie|.net cookie 过期代码

 this.Response.Cookies["adminusers"].Expires = DateTime.Now.AddDays(-1); 
Response.Cookies.Add(Request.Cookies["adminusers"]);

  Response.Redirect("/login.aspx");

为什么不能设置过期呢是因为你没写入客户端把cookie

Response.Cookies.Add(Request.Cookies["adminusers"]);

这就话就是把cookie写回客户端

只有加这句才好用

不行的用以下的代码清楚全部的cookie

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); 
Response.Cookies.Add(aCookie); 
}