/// <summary>
///
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
private MultiPolygon ReadMultiPolygon(XmlReader reader)
{
string strSRID = null;
string strGID = null;
int nSRID = -1;
if (reader.Name == GeometryGml2.GmlMultiPolygon && reader.HasAttributes)
{
ReadGeometryAttributes(reader, ref strSRID, ref strGID);
if (strSRID != null && strSRID.Length > 0)
{
nSRID = Convert.ToInt32(strSRID);
}
}
GeometryList polygons = null;
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
if (reader.Name == GeometryGml2.GmlMultiPolygon)
{
if (reader.HasAttributes)
{
ReadGeometryAttributes(reader, ref strSRID, ref strGID);
if (strSRID != null && strSRID.Length > 0)
{
nSRID = Convert.ToInt32(strSRID);
}
}
}
else if (reader.Name == GeometryGml2.GmlPolygonMember)
{
if (polygons == null)
{
polygons = new GeometryList();
}
Polygon polygon = ReadPolygon(reader);
if (polygon != null)
{
polygons.Add(polygon);
}
}
}
else if (reader.NodeType == XmlNodeType.EndElement)
{
if (reader.Name == GeometryGml2.GmlMultiPolygon)
{
break;
}
}
}
if (polygons != null && polygons.Count > 0)
{
MultiPolygon geometry = m_objFactory.CreateMultiPolygon(
polygons.ToPolygonArray());
if (nSRID > 0 || (strGID != null && strGID.Length > 0))
{
geometry.CreateProperties();
if (nSRID > 0)
{
geometry.Properties.Add("SRID", nSRID);
}
if (strGID != null && strGID.Length > 0)
{
geometry.Properties.Add("GID", strGID);
}
}
return(geometry);
}
return(null);
}