Esempio n. 1
0
        private DatasetVector DatasetConvertRegionToLine(DatasetVector dtVector2)
        {
            DatasetVector dtVector = null;

            if (dtVector2 != null)
            {
                DatasetVectorInfo dvi = new DatasetVectorInfo();
                dvi.Name = m_selLayer.Dataset.Datasource.Datasets.GetAvailableDatasetName("C_geoLine");
                dvi.Type = DatasetType.Line;

                //DatasetVector
                dtVector = m_selLayer.Dataset.Datasource.Datasets.Create(dvi);
                foreach (FieldInfo fi in dtVector2.FieldInfos)
                {
                    if (dtVector.FieldInfos.IndexOf(fi.Name) < 0 && !fi.IsSystemField)
                    {
                        dtVector.FieldInfos.Add(fi.Clone());
                    }
                }

                Recordset recdst = dtVector.GetRecordset(true, CursorType.Dynamic);

                recdst.Batch.Begin();
                try
                {
                    Recordset recdst2 = dtVector2.GetRecordset(false, CursorType.Static);
                    while (!recdst2.IsEOF)
                    {
                        GeoRegion geoR = recdst2.GetGeometry() as GeoRegion;

                        if (geoR != null)
                        {
                            GeoLine geoLine = geoR.ConvertToLine();
                            recdst.AddNew(geoLine);
                            foreach (FieldInfo fi in dtVector2.FieldInfos)
                            {
                                if (dtVector.FieldInfos.IndexOf(fi.Name) > -1 && !fi.IsSystemField)
                                {
                                    recdst.SetFieldValue(fi.Name, recdst2.GetFieldValue(fi.Name));
                                }
                            }
                            geoR.Dispose();
                        }
                        recdst2.MoveNext();
                    }
                    recdst2.Dispose();
                }
                catch { }
                recdst.Batch.Update();
                recdst.Dispose();
            }
            return(dtVector);
        }