摘要：
1、if (!IsPostBack) { DBindFilter(); this.gvwData.Attributes.Add("SortExpression", "HouseID"); this.gvwData.Attributes.Add("SortDirection", "ASC"); GridViewDataBind(); chklColumns.Visible = !IsPostBack; //设置“显示字段”的下拉属性 } else { chklColumns.Visible = IsPostBack; 阅读全文