This .NET class wraps the AcDbLinkedTableData ObjectARX class. 

This class is used to store and manage data in a tabular structure. Though this class is similar to a database table it differs in one respect: all the cells in a column need not be of the same data type. In addition, the cells in this table can contain multiple contents, and the contents can be a value of any supported data type, field, or block. This table stores and manages only data without any format information.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.LinkedData
        Autodesk.AutoCAD.DatabaseServices.LinkedTableData
            Autodesk.AutoCAD.DatabaseServices.FormattedTableData

Public Class LinkedTableData
Inherits LinkedData

public class LinkedTableData : LinkedData;