This .NET class wraps the AcDbRegAppTable ObjectARX class.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.SymbolTable
        Autodesk.AutoCAD.DatabaseServices.RegAppTable

Public sealed Class RegAppTable
Inherits SymbolTable
Inherits IEnumerable

public sealed class RegAppTable : SymbolTable, IEnumerable;