缩放到被选择的部分： ICommand Cmd = new ControlsZoomToSelectedCommandClass();

AddItem("esriControls.ControlsZoomToSelectedCommand"); //ICommand Cmd = new ControlsZoomToSelectedCommandClass();

缩放到被选择的部分： ICommand Cmd = new ControlsZoomToSelectedCommandClass();

 IGeometry pGeometry = null;
            string m = ArcGISPub.ArcGISToolPub.getMatch();
            if (FBFExtent) //按发包方范围
            {
                string ZJQYDM = 承包方编码.Substring(0, 14);

                IFeatureSelection pFeatureSelection = ArcGISPub.ArcGISClassPub.getFeatureSelect(ZJQYFeatureLayer, "ZJQYDM like '" + m + ZJQYDM + m + "'");
                pGeometry = ArcGISPub.ArcGISClassPub.GetFeatureLayerSelectGeometry(ZJQYFeatureLayer);
                ArcGISPub.ArcGISToolPub.RunCommand("esriControls.ControlsZoomToSelectedCommand", m_application);//ControlsZoomToSelectedCommand  esriControls.ControlsZoomToSelectedCommand,{06DD3F57-CF78-41BA-83F4-D13A8679914F}

                pFeatureSelection.Clear();

            }
            else
            {

                IFeatureSelection pFeatureSelection = ArcGISPub.ArcGISClassPub.getFeatureSelect(DKFeatureLayer, "承包方编码 like '" + m + 承包方编码 + m + "'");
                int num = pFeatureSelection.SelectionSet.Count;
                if (num > 0)
                {
                    pGeometry = ArcGISPub.ArcGISClassPub.GetFeatureLayerSelectGeometry(DKFeatureLayer);
                    ArcGISPub.ArcGISToolPub.RunCommand("esriControls.ControlsZoomToSelectedCommand", m_application);//ControlsZoomToSelectedCommand  esriControls.ControlsZoomToSelectedCommand,{06DD3F57-CF78-41BA-83F4-D13A8679914F}
                    m_hookHelper.ActiveView.Refresh();
                    pFeatureSelection.Clear();
                }

            }

            IEnvelope pEnvelope = pGeometry.Envelope;
            return pGeometry.Envelope;

        }