This .NET class wraps the AcDbDimStyleTable ObjectARX class. 

It is the symbol table for DimStyleTableRecords, which represents dimension styles within the drawing database.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.SymbolTable
        Autodesk.AutoCAD.DatabaseServices.DimStyleTable

Public sealed Class DimStyleTable
Inherits SymbolTable
Inherits IEnumerable

public sealed class DimStyleTable : SymbolTable, IEnumerable;

For dimensioning, it is often desirable to have a set of similar styles that are essentially variations on a theme, with each style intended for a different dimension type (that is, angular, linear, radial, and so on). Such a group of styles is known as an DimStyle family.

DBObject