This .NET class wraps the resbuf ObjectARX struct. 

Result buffer structure that handles all AutoCAD basic data types. See ObjectARX Global Utility Functions->Variables, Types, and Values Defined in ObjectARX->Result Buffers and Type Codes in the ObjectARX Developer's Guide for more information.

Autodesk.AutoCAD.DatabaseServices.ResultBuffer

Public sealed Class ResultBuffer
Inherits DisposableWrapper
Inherits IEnumerable
Inherits IFormattable

public sealed class ResultBuffer : DisposableWrapper, IEnumerable, IFormattable;