using Kompas6API7;
using System.Runtime.InteropServices;
  
         
 try
            {
                    Kompas6API7.IApplication kompas = (_Application)Marshal.GetActiveObject("KOMPAS.Application.7");
                    IKompasDocument doc =  kompas.App.Documents.Open("test", true, true);
                    IKompasDocument3D doc3D = kompas.App.ActiveDocument as IKompasDocument3D;

                    doc.Close(DocumentCloseOptions.kdDoNotSaveChanges);
                    doc3D.Close()

            }
            catch (Exception)
            {
                kompas = null;


            }
kompas = null;