RecordOffset = the offset of the field in a record.
For Field 0, RecordOffset = 0,
For Field 1, RecordOffset = Length of Field 0,
For Field N, RecordOffset = Length of Field0 to FieldN-1
Namespace:
EGIS.ShapeFileLibAssembly: EGIS.ShapeFileLib (in EGIS.ShapeFileLib.dll)