protected override void OnPreLoad(EventArgs e) { if (!IsPostBack) { this.btnSubmit.Visible = false; this.BindSelectDropDownList(this.ed_Fangshi, Suzhi.ListFangshi()); this.BindSelectDropDownList(this.ed_Xiangmu, Suzhi.ListXiangmu()); this.BindSelectDropDownList(this.ed_Dengdi, Suzhi.ListDengdi()); } base.OnPreLoad(e); }