adding parts into an Assembly C#

Good day! Please tell me how to add multiple parts in an Assembly in C#. The macro does not help. Created the Assembly, but the part is not added.

using SolidWorks.Interop.sldworks;

using SolidWorks.Interop.swconst;

using System.Runtime.InteropServices;

using System;

namespace Macro1.csproj

{

    public partial class SolidWorksMacro

    {

        public void Main()

        {

            ModelDoc2 swDoc = null;

            PartDoc swPart = null;

            DrawingDoc swDrawing = null;

            AssemblyDoc swAssembly = null;

            bool boolstatus = false;

            int longstatus = 0;

            int longwarnings = 0;

            swDoc = ((ModelDoc2)(swApp.NewDocument("C:\\ProgramData\\SolidWorks\\SolidWorks 2016\\templates\\gost-assy.asmdot", 0, 0, 0)));

            swApp.ActivateDoc2("Сборка2", false, ref longstatus);

            swDoc = ((ModelDoc2)(swApp.ActiveDoc));

            ModelView myModelView = null;

            myModelView = ((ModelView)(swDoc.ActiveView));

            myModelView.FrameState = ((int)(swWindowState_e.swWindowMaximized));

            swAssembly = ((AssemblyDoc)(swDoc));

            boolstatus = swAssembly.AddComponent("C:\\Users\\Desktop\\fgfg.SLDPRT", 0.027620825299025514, 0.072698020262157451, 0.15179969937013105);

        }

        /// <summary>

        ///  The SldWorks swApp variable is pre-assigned for you.

        /// </summary>

        public SldWorks swApp;

    }

}