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); }