防止网页后退--禁止缓存

protected void Page_Load(object sender, EventArgs e)

{

    //防止网页后退--禁止缓存

    Response.Expires = 0;

    Response.Buffer = true;

    Response.ExpiresAbsolute = DateTime.Now.AddSeconds(-1);

    Response.AddHeader("pragma", "no-cache");

    Response.CacheControl = "no-cache";

}