public ShapefileDataReader(IStreamProviderRegistry streamProviderRegistry, IGeometryFactory geometryFactory)
{
if (streamProviderRegistry == null)
{
throw new ArgumentNullException("streamProviderRegistry");
}
if (geometryFactory == null)
{
throw new ArgumentNullException("geometryFactory");
}
_open = true;
_dbfReader = new DbaseFileReader(streamProviderRegistry);
_shpReader = new ShapefileReader(streamProviderRegistry, geometryFactory);
_dbfHeader = _dbfReader.GetHeader();
_recordCount = _dbfHeader.NumRecords;
// copy dbase fields to our own array. Insert into the first position, the shape column
_dbaseFields = new DbaseFieldDescriptor[_dbfHeader.Fields.Length + 1];
_dbaseFields[0] = DbaseFieldDescriptor.ShapeField();
for (int i = 0; i < _dbfHeader.Fields.Length; i++)
{
_dbaseFields[i + 1] = _dbfHeader.Fields[i];
}
_shpHeader = _shpReader.Header;
_dbfEnumerator = _dbfReader.GetEnumerator();
_shpEnumerator = _shpReader.GetEnumerator();
_moreRecords = true;
}
/// <summary>
/// Initializes a new instance of the ShapefileDataReader class.
/// </summary>
/// <param name="filename">The shapefile to read (minus the .shp extension)</param>
/// <param name="geometryFactory">The GeometryFactory to use.</param>
/// <param name="encoding">The encoding to use for reading the attribute data</param>
public ShapefileDataReader(string filename, IGeometryFactory geometryFactory, Encoding encoding)
{
if (String.IsNullOrEmpty(filename))
{
throw new ArgumentNullException("filename");
}
if (geometryFactory == null)
{
throw new ArgumentNullException("geometryFactory");
}
_open = true;
string prjFile = Path.ChangeExtension(filename, ".prj");
CoordinateSystem = File.Exists(prjFile) ? PrjFileReader.Read(prjFile) : null;
string dbfFile = Path.ChangeExtension(filename, "dbf");
_dbfReader = encoding != null
? new DbaseFileReader(dbfFile, encoding)
: new DbaseFileReader(dbfFile);
string shpFile = Path.ChangeExtension(filename, "shp");
_shpReader = new ShapefileReader(shpFile, geometryFactory);
_dbfHeader = _dbfReader.GetHeader();
_recordCount = _dbfHeader.NumRecords;
// copy dbase fields to our own array.
//Insert into the first position, the shape column
_dbaseFields = new DbaseFieldDescriptor[_dbfHeader.Fields.Length + 1];
_dbaseFields[0] = DbaseFieldDescriptor.ShapeField();
for (int i = 0; i < _dbfHeader.Fields.Length; i++)
{
_dbaseFields[i + 1] = _dbfHeader.Fields[i];
}
_shpHeader = _shpReader.Header;
_dbfEnumerator = _dbfReader.GetEnumerator();
_shpEnumerator = _shpReader.GetEnumerator();
_moreRecords = true;
CheckIfHasFID();
}