/// <summary>
/// Method to write a dummy dbase file
/// </summary>
/// <param name="dbfWriter">The dbase file writer</param>
/// <param name="recordCount">The number of records</param>
public static void WriteDummyDbf(DbaseFileWriter dbfWriter, int recordCount)
{
// Create the dummy header
var dbfHeader = new DbaseFileHeader {
NumRecords = recordCount
};
// add some dummy column
dbfHeader.AddColumn("Description", 'C', 20, 0);
// Write the header
dbfWriter.Write(dbfHeader);
// Write the features
for (int i = 0; i < recordCount; i++)
{
var columnValues = new List <double> {
i
};
dbfWriter.Write(columnValues);
}
// End of file flag (0x1A)
dbfWriter.WriteEndOfDbf();
dbfWriter.Close();
}
/// <summary>
/// Writes the specified feature collection.
/// </summary>
/// <param name="featureCollection">The feature collection.</param>
public void Write(IEnumerable <IFeature> featureCollection)
{
// Test if the Header is initialized
if (Header is null)
{
throw new ApplicationException("Header must be set first!");
}
using (var featuresEnumerator = featureCollection.GetEnumerator())
{
// scan the original sequence looking for a geometry that we can
// use to figure out the shape type. keep the original features
// around so we don't have to loop through the input twice; we
// shouldn't have to look *too* far for a non-empty geometry.
Geometry representativeGeometry = null;
var headFeatures = new List <IFeature>();
while (representativeGeometry?.IsEmpty != false && featuresEnumerator.MoveNext())
{
var feature = featuresEnumerator.Current;
headFeatures.Add(feature);
representativeGeometry = feature.Geometry;
}
var shapeFileType = Shapefile.GetShapeType(representativeGeometry);
using (_dbaseWriter)
using (var shapefileWriter = new ShapefileWriter(_geometryFactory, _streamProviderRegistry, shapeFileType))
{
_dbaseWriter.Write(Header);
string[] fieldNames = Array.ConvertAll(Header.Fields, field => field.Name);
object[] values = new object[fieldNames.Length];
// first, write the one(s) that we scanned already.
foreach (var feature in headFeatures)
{
Write(feature);
}
// now continue through the features we haven't scanned yet.
while (featuresEnumerator.MoveNext())
{
Write(featuresEnumerator.Current);
}
void Write(IFeature feature)
{
shapefileWriter.Write(feature.Geometry);
var attribs = feature.Attributes;
for (int i = 0; i < fieldNames.Length; i++)
{
values[i] = attribs[fieldNames[i]];
}
_dbaseWriter.Write(values);
}
}
}
}
/// <summary>
/// Writes the specified feature collection.
/// </summary>
/// <param name="featureCollection">The feature collection.</param>
public void Write(IList <IFeature> featureCollection)
{
// Test if the Header is initialized
if (Header == null)
{
throw new ApplicationException("Header must be set first!");
}
#if DEBUG
// Test if all elements of the collections are features
foreach (object obj in featureCollection)
{
if (obj.GetType().IsAssignableFrom(typeof(IFeature)))
{
throw new ArgumentException("All the elements in the given collection must be " + typeof(IFeature).Name);
}
}
#endif
try
{
// Write shp and shx
var geometries = new IGeometry[featureCollection.Count];
var index = 0;
foreach (IFeature feature in featureCollection)
{
geometries[index++] = feature.Geometry;
}
ShapefileWriter.WriteGeometryCollection(_shpFile, new GeometryCollection(geometries, _geometryFactory));
// Write dbf
_dbaseWriter.Write(Header);
foreach (IFeature feature in featureCollection)
{
var attribs = feature.Attributes;
ArrayList values = new ArrayList();
for (int i = 0; i < Header.NumFields; i++)
{
values.Add(attribs[Header.Fields[i].Name]);
}
_dbaseWriter.Write(values);
}
}
finally
{
// Close dbf writer
_dbaseWriter.Close();
}
}
/// <summary>
/// Write the enumeration of features to shapefile (shp, shx and dbf)
/// </summary>
/// <param name="filename">Filename to create</param>
/// <param name="features">Enumeration of features to write, features will be enumerated once</param>
/// <param name="fields">Fields that should be written, only those attributes specified here will be mapped from the feature attributetable while writing</param>
/// <param name="shapeGeometryType">Type of geometries shapefile</param>
/// <param name="dbfEncoding">Optional Encoding to be used when writing the DBF-file (default Windows-1252)</param>
public static void WriteFeatures(string filename, IEnumerable <IFeature> features, DbaseFieldDescriptor[] fields, ShapeGeometryType shapeGeometryType,
Encoding dbfEncoding = null)
{
// Set default encoding if not specified
if (dbfEncoding == null)
{
dbfEncoding = DbaseEncodingUtility.GetEncodingForCodePageIdentifier(1252);
}
// Open shapefile and dbase stream writers
using (var shpWriter = new ShapefileWriter(Path.ChangeExtension(filename, ".shp"), shapeGeometryType))
{
using (var dbfWriter = new DbaseFileWriter(Path.ChangeExtension(filename, ".dbf"), dbfEncoding))
{
var dbfHeader = new DbaseFileHeader(dbfEncoding);
foreach (var field in fields)
{
dbfHeader.AddColumn(field.Name, field.DbaseType, field.Length, field.DecimalCount);
}
dbfWriter.Write(dbfHeader);
int numFeatures = 0;
string[] fieldNames = Array.ConvertAll(fields, field => field.Name);
object[] values = new object[fieldNames.Length];
foreach (var feature in features)
{
shpWriter.Write(feature.Geometry);
for (int i = 0; i < fieldNames.Length; i++)
{
values[i] = feature.Attributes[fieldNames[i]];
}
dbfWriter.Write(values);
numFeatures++;
}
// set the number of records
dbfHeader.NumRecords = numFeatures;
// Update the header
dbfWriter.Write(dbfHeader);
// write the end of dbase file marker
dbfWriter.WriteEndOfDbf();
// close the dbase stream
dbfWriter.Close();
}
}
}
/// <summary>
///
/// </summary>
/// <param name="filename"></param>
/// <param name="recordCount"></param>
public static void WriteDummyDbf(string filename, int recordCount)
{
DbaseFileHeader dbfHeader = new DbaseFileHeader();
dbfHeader.NumRecords = recordCount;
dbfHeader.AddColumn("Description", 'C', 20, 0);
DbaseFileWriter dbfWriter = new DbaseFileWriter(filename);
dbfWriter.Write(dbfHeader);
for (int i = 0; i < recordCount; i++)
{
List <double> columnValues = new List <double>();
columnValues.Add((double)i);
dbfWriter.Write(columnValues);
}
// End of file flag (0x1A)
dbfWriter.Write(0x1A);
dbfWriter.Close();
}
/// <summary>
///
/// </summary>
/// <param name="filename"></param>
/// <param name="recordCount"></param>
public static void WriteDummyDbf(string filename, int recordCount)
{
filename = Path.ChangeExtension(filename, "dbf");
var dbfHeader = new DbaseFileHeader {
NumRecords = recordCount
};
dbfHeader.AddColumn("Description", 'C', 20, 0);
var dbfWriter = new DbaseFileWriter(filename);
dbfWriter.Write(dbfHeader);
for (var i = 0; i < recordCount; i++)
{
var columnValues = new List <double> {
i
};
dbfWriter.Write(columnValues);
}
// End of file flag (0x1A)
dbfWriter.Write(0x1A);
dbfWriter.Close();
}
/// <summary>
///
/// </summary>
/// <param name="filename"></param>
/// <param name="recordCount"></param>
public static void WriteDummyDbf(string filename, int recordCount)
{
filename = Path.ChangeExtension(filename, "dbf");
var dbfHeader = new DbaseFileHeader {NumRecords = recordCount};
dbfHeader.AddColumn("Description",'C', 20, 0);
var dbfWriter = new DbaseFileWriter(filename);
dbfWriter.Write(dbfHeader);
for (var i = 0; i < recordCount; i++)
{
var columnValues = new List<double> {i};
dbfWriter.Write(columnValues);
}
// End of file flag (0x1A)
dbfWriter.Write(0x1A);
dbfWriter.Close();
}
/// <summary>
/// Write the enumeration of features to shapefile (shp, shx and dbf)
/// </summary>
/// <param name="filename">Filename to create</param>
/// <param name="features">Enumeration of features to write, features will be enumerated once</param>
/// <param name="fields">Fields that should be written, only those attributes specified here will be mapped from the feature attributetable while writing</param>
/// <param name="shapeGeometryType">Type of geometries shapefile</param>
/// <param name="dbfEncoding">Optional Encoding to be used when writing the DBF-file (default Windows-1252)</param>
public static void WriteFeatures(string filename, IEnumerable<IFeature> features, DbaseFieldDescriptor[] fields, ShapeGeometryType shapeGeometryType,
Encoding dbfEncoding = null)
{
// Set default encoding if not specified
if (dbfEncoding == null)
dbfEncoding = Encoding.GetEncoding(1252);
// Open shapefile and dbase stream writers
using (var shpWriter = new ShapefileWriter(Path.ChangeExtension(filename, ".shp"), shapeGeometryType))
{
using (var dbfWriter = new DbaseFileWriter(Path.ChangeExtension(filename, ".dbf"), dbfEncoding))
{
var dbfHeader = new DbaseFileHeader(dbfEncoding);
foreach (var field in fields)
{
dbfHeader.AddColumn(field.Name, field.DbaseType, field.Length, field.DecimalCount);
}
dbfWriter.Write(dbfHeader);
var numFeatures = 0;
foreach (var feature in features)
{
shpWriter.Write(feature.Geometry);
var values = new object[fields.Length];
for (var i = 0; i < fields.Length; i++)
{
values[i] = feature.Attributes[fields[i].Name];
}
dbfWriter.Write(values);
numFeatures++;
}
// set the number of records
dbfHeader.NumRecords = numFeatures;
// Update the header
dbfWriter.Write(dbfHeader);
// write the end of dbase file marker
dbfWriter.WriteEndOfDbf();
// close the dbase stream
dbfWriter.Close();
}
}
}
/// <summary>
/// Method to write a dummy dbase file
/// </summary>
/// <param name="dbfWriter">The dbase file writer</param>
/// <param name="recordCount">The number of records</param>
public static void WriteDummyDbf(DbaseFileWriter dbfWriter, int recordCount)
{
// Create the dummy header
var dbfHeader = new DbaseFileHeader {NumRecords = recordCount};
// add some dummy column
dbfHeader.AddColumn("Description", 'C', 20, 0);
// Write the header
dbfWriter.Write(dbfHeader);
// Write the features
for (var i = 0; i < recordCount; i++)
{
var columnValues = new List<double> {i};
dbfWriter.Write(columnValues);
}
// End of file flag (0x1A)
dbfWriter.WriteEndOfDbf();
dbfWriter.Close();
}
public static void WriteDummyDbf(DbaseFileWriter dbfWriter, int recordCount)
{
var dbfHeader = new DbaseFileHeader { NumRecords = recordCount };
dbfHeader.AddColumn("Description", 'C', 20, 0);
dbfWriter.Write(dbfHeader);
for (var i = 0; i < recordCount; i++)
{
var columnValues = new List<double> { i };
dbfWriter.Write(columnValues);
}
// End of file flag (0x1A)
dbfWriter.Write(0x1A);
dbfWriter.Close();
}