public FeatureType GetFeatureType(string fileName)
{
using (var reader = new OgrDataReader(fileName))
{
return(reader.GetFeatureType());
}
}
/// <summary>
/// Opens the specified file
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public IFeatureSet Open(string fileName)
{
IFeatureSet fs = new FeatureSet();
fs.Name = Path.GetFileNameWithoutExtension(fileName);
fs.Filename = fileName;
using (var reader = new OgrDataReader(fileName))
{
// skip the geometry column which is always column 0
for (int i = 1; i < reader.FieldCount; i++)
{
string sFieldName = reader.GetName(i);
Type type = reader.GetFieldType(i);
int uniqueNumber = 1;
string uniqueName = sFieldName;
while (fs.DataTable.Columns.Contains(uniqueName))
{
uniqueName = sFieldName + uniqueNumber;
uniqueNumber++;
}
fs.DataTable.Columns.Add(new DataColumn(uniqueName, type));
}
var wkbReader = new WKBReader();
while (reader.Read())
{
var wkbGeometry = (byte[])reader["Geometry"];
var geometry = wkbReader.Read(wkbGeometry);
IFeature feature = new Feature(geometry);
feature.DataRow = fs.DataTable.NewRow();
for (int i = 1; i < reader.FieldCount; i++)
{
object value = reader[i];
if (value == null)
{
value = DBNull.Value;
}
feature.DataRow[i - 1] = value;
}
fs.Features.Add(feature);
}
try
{
fs.Projection = reader.GetProj4ProjectionInfo();
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
}
return(fs);
}
