public void Dispose()
{
if (_shpBinaryReader != null)
{
_shpBinaryReader.Close();
}
}
public void Close()
{
if (!_isClosed)
{
_reader.Close();
_isClosed = true;
}
}
public bool MoveNext()
{
if (_shpBinaryReader.PeekChar() != -1)
{
int recordNumber = _shpBinaryReader.ReadIntBE();
int contentLength = _shpBinaryReader.ReadIntBE();
if (Shapefile.TraceSwitch.Enabled)
{
Trace.WriteLine("Record number :" + recordNumber);
Trace.WriteLine("contentLength :" + contentLength);
}
_geometry = _handler.Read(_shpBinaryReader, _parent._geometryFactory);
return(true);
}
else
{
// reached end of file, so close the reader.
_shpBinaryReader.Close();
return(false);
}
}
/// <summary>
/// Initializes a new instance of the Shapefile class with the given parameters.
/// </summary>
/// <param name="filename">The filename of the shape file to read (with .shp).</param>
/// <param name="geometryFactory">The GeometryFactory to use when creating Geometry objects.</param>
public ShapefileReader(string filename, GeometryFactory geometryFactory)
{
if (filename == null)
{
throw new ArgumentNullException("filename");
}
if (geometryFactory == null)
{
throw new ArgumentNullException("geometryFactory");
}
_filename = filename;
Trace.WriteLineIf(Shapefile.TraceSwitch.Enabled, "Reading filename:" + filename);
_geometryFactory = geometryFactory;
// read header information. note, we open the file, read the header information and then
// close the file. This means the file is not opened again until GetEnumerator() is requested.
// For each call to GetEnumerator() a new BinaryReader is created.
FileStream stream = new FileStream(filename, System.IO.FileMode.Open, FileAccess.Read, FileShare.Read);
BigEndianBinaryReader shpBinaryReader = new BigEndianBinaryReader(stream);
_mainHeader = new ShapefileHeader(shpBinaryReader);
shpBinaryReader.Close();
}
/// <summary>
/// Initializes a new instance of the Shapefile class with the given parameters.
/// </summary>
/// <param name="filename">The filename of the shape file to read (with .shp).</param>
/// <param name="geometryFactory">The GeometryFactory to use when creating Geometry objects.</param>
public ShapefileReader(string filename, GeometryFactory geometryFactory)
{
if (filename==null)
{
throw new ArgumentNullException("filename");
}
if (geometryFactory==null)
{
throw new ArgumentNullException("geometryFactory");
}
_filename = filename;
Trace.WriteLineIf(Shapefile.TraceSwitch.Enabled,"Reading filename:"+filename);
_geometryFactory = geometryFactory;
// read header information. note, we open the file, read the header information and then
// close the file. This means the file is not opened again until GetEnumerator() is requested.
// For each call to GetEnumerator() a new BinaryReader is created.
FileStream stream = new FileStream(filename, System.IO.FileMode.Open, FileAccess.Read, FileShare.Read);
BigEndianBinaryReader shpBinaryReader = new BigEndianBinaryReader(stream);
_mainHeader = new ShapefileHeader(shpBinaryReader);
shpBinaryReader.Close();
}