public override void FillDatabase(Teigha.DatabaseServices.Database pDb)        {            IFeatureClassContainer pFeatureClassContainer = pCADFeatureDataset as IFeatureClassContainer;            IEnumFeatureClass pEnumFeatureClass = pFeatureClassContainer.Classes;            IFeatureClass pFeatureClass = pEnumFeatureClass.Next();                       while (pFeatureClass != null)            {                               LoadLayer(pFeatureClass, pDb);                Debug.WriteLine(pFeatureClass.FeatureType.ToString() + "-" + pFeatureClass.AliasName + "-" + pFeatureClass.ShapeType.ToString());                pFeatureClass = pEnumFeatureClass.Next();            }        }        private void LoadLayer(IFeatureClass pFeatureClass, Teigha.DatabaseServices.Database pDb)        {            int indx = pFeatureClass.FindField("Layer");            int idxColor = pFeatureClass.FindField("Color");            int idxText = pFeatureClass.FindField("TxtMemo");            int idxHandle = pFeatureClass.FindField("Handle");                       pCursor = pFeatureClass.Search(null, false);            IFeature pFeature2 = pCursor.NextFeature();            //写入点线                    if (pFeatureClass.FeatureType == esriFeatureType.esriFTCoverageAnnotation)                {                    while (pFeature2 != null)                    {                        string geoName = "C_" + pFeature2.get_Value(indx).ToString();                        string sAnnotation = pFeature2.get_Value(idxText).ToString();                        IPoint pPoint = pFeature2.Shape as IPoint;                        double x = 0, y = 0;                        pPoint.QueryCoords(out x, out y);                        Point3d pt = new Point3d(x, y, 0);                        addTextEnt(modelSpaceId, pt, pt, sAnnotation, 2, TextHorizontalMode.TextLeft, TextVerticalMode.TextTop, LayerNames[geoName], ttfStyleId);                        pFeature2 = pCursor.NextFeature();                    }                }                else                {                    if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryPoint)                    {                        while (pFeature2 != null)                        {                            IPoint pt = pFeature2.Shape as IPoint;                            pFeature2 = pCursor.NextFeature();                        }                    }                    else if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline)                    {                        short shtColor = 1;                        while ((pFeature2 = pCursor.NextFeature()) != null)                        {                            string geoName = "C_" + pFeature2.get_Value(indx).ToString();                        }                    }                    else if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon)                    {                        short shtColor = 1;                        while ((pFeature2 = pCursor.NextFeature()) != null)                        {                            string geoName = "C_" + pFeature2.get_Value(indx).ToString();                                                   }                    }            }           System.Runtime.InteropServices.Marshal.ReleaseComObject(pCursor);            pCursor = null;        }    }