WinAPI methods replacement in D365

Hi All,

In AX 2012, I have the code which calls WinAPI method getSaveFileName. This method shows the Saveas dialog with the fileName suggested in the FileName field. Does anyone know if there is any replacement for this method in D365, as WinAPI has been deprecated. I already looked at the FileUpload.. classes in AOT, but couldn't find any method which does the same thing I am looking for.  The requirement is to get the fileName from the user through SaveAs dialog and then write to that file.

Thanks,

Baber.