private void m_cmd_bc_nam_ItemClick(object sender, ItemClickEventArgs e) { try { f491_rpt_bao_cao_tong_hop_thu_nhap_theo_nam v_f = new f491_rpt_bao_cao_tong_hop_thu_nhap_theo_nam(); if(IsExistFormName(v_f)) return; v_f.MdiParent = this; v_f.Show(); } catch(Exception v_e) { CSystemLog_301.ExceptionHandle(v_e); } }