Question

asp.net里面关于cookie的问题，我点击Button后，Label控件为什么是显示4而不是1呢？代码在下面...

看以下代码： protected void Page_Load(object sender, EventArgs e) { HttpCookie cookie = new HttpCookie("test"); cookie.Value = "1"; Response.Cookies.Add(cookie); Label1.Text = Request.Cookies["test"].Value; } protected void Button1_Click(object sender, EventArgs e) { Request.Cookies["test"].Value = "4"; Response.Cookies.Add(Request.Cookies["test"]); Response.Redirect("~/JianAn/T.aspx"); }

Answer 1

因为你点击之后触发了Button1_Click事件Request.Cookies["test"].Value = "4";
将Cookie赋值等于4.

Answer 2

加上if(!isPostBack)条件。

Answer 3

被 LOad了，加个if(!ISPOSTBAL){}就可以了，希望对你有用

Answer 4

if(!isPostBack)