protected void ddlTrangThai_SelectedIndexChanged(object sender, EventArgs e) { if (ddlTrangThai.SelectedValue == "-1" || ddlTrangThai.SelectedValue == "-4") { CaChet.Visible = true; tblLyDoChet = csCont.LoadLyDoChet(1); if (Request.QueryString["type"] == "chuyentrangthai") { if (Session["DSCaSauChuyenTrangThai"] != null && Session["DSCaSauChuyenTrangThai"].ToString() != "") { grvSPTH.DataSource = csCont.CaSau_GetCaSauFromArray(Session["DSCaSauChuyenTrangThai"].ToString()); grvSPTH.DataBind(); } } else if (Request.QueryString["type"] == "editchuyentrangthai") { if (hdIDCaSau.Value != "0") { grvSPTH.DataSource = csCont.CaSau_GetCaSauFromArray("@" + hdIDCaSau.Value + "@"); grvSPTH.DataBind(); } } } else { CaChet.Visible = false; } }