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);
}