做个登入 用Cookie 记录时间，登入错误3 次后 冻结 等到3分钟后才能正常登入，这个cookie 要怎么写啊11111111
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- C# code
protected void btnSave_Click(object sender, EventArgs e){ HttpCookie cookie = Request.Cookies["UserID"]; if (cookie == null) { cookie = new HttpCookie("UserID", "0"); cookie.Expires = DateTime.Now.AddMinutes(3); } int i = Convert.ToInt16(cookie.Value); if (i >= 3) { Response.Write("<script>window.alert('登入3次');</s" + "cript>"); return; } string connStr = "Data Source=.;Initial Catalog=SchoolDB;Integrated Security=True "; string sql = "select count(UserID) from Student where UserName=@UserName And [PassWord]=@Password"; using (SqlConnection conn = new SqlConnection(connStr)) { SqlCommand comm = new SqlCommand(); comm.Connection = conn; comm.CommandText = sql; comm.Parameters.AddWithValue("@UserName", this.txtUserNam.Text); comm.Parameters.AddWithValue("@Password", this.txtPassWord.Text); conn.Open(); SqlDataReader dr = comm.ExecuteReader(); if (dr.HasRows) { Response.Write("登入成功！"); } else { i++; cookie["UserID"] = i.ToString(); } } Response.Cookies.Add(cookie);}