How to get a list of Viewports C#

Hi Everyone!

I am using verson of MicroStation  Connection. For example I have a model (aka sheet) and it has several (4) attaches. In the sheet I see them as Viewports.

Is there a way to get each viewport and iterate through them?

If there is no such method, is it possible to get the boundaries of each viewport in the drawing (as a 2D point) and then for each of them get a 3D point in the model space?

Thank you!