AreaBLL _AreaBLL = new AreaBLL(); //实例化 protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { DataTable dt = _AreaBLL.GetSettings(); if (dt != null && dt.Rows.Count > 0) { this.txtValue.Text = dt.Rows[0]["Value"].ToString(); this.SettingId.Value = dt.Rows[0]["SettingId"].ToString(); } } }