public class CustomEditOverlay : EditInteractiveOverlay
        {
            public ShapeFileFeatureLayer EditableLayer;
            public WinformsMap Map;
            private Feature moEditFeature;
            protected override void EndEditingCore(ThinkGeo.MapSuite.Core.PointShape targetPointShape)
            {
                base.EndEditingCore(targetPointShape);
                var _with1 = EditableLayer;
                if (!_with1.EditTools.IsInTransaction)
                {
                    _with1.EditTools.BeginTransaction();
                    _with1.EditTools.IsTransactionLive = true;
                }

                Feature oColFeature = EditableLayer.QueryTools.GetFeatureById(moEditFeature.Id, ReturningColumnsType.AllColumns);
                Feature oEditFeature = new Feature(moEditFeature.GetShape(), oColFeature.ColumnValues);


                _with1.EditTools.Update(oEditFeature);
                _with1.EditTools.CommitTransaction();
                EditableLayer.Close();
                Map.Refresh();
                moEditFeature = null;
            }
            protected override void OnVertexMoved(ThinkGeo.MapSuite.DesktopEdition.VertexMovedEditInteractiveOverlayEventArgs e)
            {
                moEditFeature = e.AffectedVertexFeature;
                base.OnVertexMoved(e);
            }

        }