.aspx文件中

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.aspx.cs文件中

protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            this.txtUser_Id.Focus();            if (!Object.Equals(Request.Cookies["UserID"], null))            {                //创建一个Cookie对象，实现记住用户名                HttpCookie readcookie = Request.Cookies["UserID"];                this.txtUser_Id.Text = readcookie.Value;            }        }    }    private void CreateCookie()    {        //创建一个Cookie对象        HttpCookie cookie = new HttpCookie("UserID");        //判断Checkbox控件是否被选中        if (this.cbxRemeberUser.Checked)        {            //将用户编号存储到创建的Cookie对象中            cookie.Value = this.txtUser_Id.Text;        }        //获取创建的Cookie对象的过期时间        cookie.Expires = DateTime.MaxValue;        //将创建的Cookie对象添加到内部Cookie集合中        Response.AppendCookie(cookie);}    protected void btnInsert_Click(object sender, ImageClickEventArgs e)    {…        if (object.Equals(Request.Cookies["UserID"], null))        {          //调用自定义方法 CreateCookie()存储用户名          CreateCookie();        }        else        {           CreateCookie();        }…}