private void DataBind(string key = "") { DataTable dt = new DataTable(); if (!string.IsNullOrEmpty(Request.QueryString["type"])) { if (Request.QueryString["type"] == "1") { dt = B_ADZone.Select_Bytype("饼状图"); } if (Request.QueryString["type"] == "2") { dt = B_ADZone.Select_Bytype("线状图"); } if (Request.QueryString["type"] == "3") { dt = B_ADZone.Select_Bytype("柱状图"); } } else { dt = B_ADZone.SelectChart(); } Egv.DataSource = dt; Egv.DataBind(); }