arcgis desktop - How to get a list of map scales programmatically in ArcMap?

I need to get all map scales, which are shown in the ArcMap scalebar. I need list of value, something like:

1:1500
1:3000
1:6000
1:12000
1:24000
1:50000
1:100000

Does anyone know how to get it?

Answer

Sorry, maybe my question was not clear enough, but I found the solution, and it simple enough.

IDisplayTransformationScales interface provides access to this data.

using .NET it look like:

var mxDocument = (IMxDocument)_application.Document;
var activeView = (IActiveView)mxDocument.FocusMap;
var dts = (IDisplayTransformationScales)activeView.ScreenDisplay.DisplayTransformation;
var scales = Enumerable.Range(0, dts.UserScaleCount)

                       .Select(x => dts.GetUserScale(x))
                       .ToArray();

if you want use scale format defined in ArcMap you should use ScaleFormat class.

I would be very appreciated if someone tell me a way to get all scale formats.