Insert Grid System Feature Example (C#)

//-----------------------------------------------------------------------------
// Preconditions:
// 1. Verify that the specified part template exists.
// 2. Open the Immediate window.
//
// Postconditions:
// 1. Opens a new part document.
// 2. Creates a sketch of a circle.
// 3. Inserts GridSystem1, which contains Surface-Extrude1, Level1, Level2,
//    and two derived sketches, in the FeatureManager design tree.
// 4. Sets the height of each level of the surface extrude to 50.0 mm.
// 5. Examine the Immediate window and graphics area.
// 6. Expand GridSystem1 in FeatureManager design tree.
//------------------------------------------------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;
namespace InsertGridFeature_CSharp.csproj
{
    partial class SolidWorksMacro
    {

        Feature GridFeature;
        ModelDoc2 Part;
        ModelView myModelView;
        SketchSegment skSegment;
        bool boolstatus;
        int longstatus;

        public void Main()
        {

            swApp.ResetUntitledCount(0, 0, 0);
            Part = (ModelDoc2)swApp.NewDocument("C:\\ProgramData\\SOLIDWORKS\\SOLIDWORKS 2016\\templates\\Part.prtdot", 0, 0, 0);
            swApp.ActivateDoc2("Part1", false, ref longstatus);
            Part = (ModelDoc2)swApp.ActiveDoc;

            myModelView = (ModelView)Part.ActiveView;
            myModelView.FrameLeft = 0;
            myModelView.FrameTop = 0;
            myModelView.FrameState = (int)swWindowState_e.swWindowMaximized;
            Part.ShowNamedView2("*Isometric", 7);

            skSegment = Part.SketchManager.CreateCircle(-0.019633, 0.076084, 0.0, -0.001997, 0.081475, 0.0);
            Part.SketchManager.InsertSketch(true);

            boolstatus = Part.Extension.SelectByID2("Sketch1", "SKETCH", 0, 0, 0, false, 0, null, 0);

            object offsetArray = null;
            double[] heightsArray = new double[2];
            heightsArray[0] = 0.05;
            heightsArray[1] = 0.05;
            offsetArray = heightsArray;

            GridFeature = Part.FeatureManager.InsertGridFeature((offsetArray));
            Debug.Print(GridFeature.Name + " was created.");

            Part.ViewZoomtofit();
        }

        public SldWorks swApp;

    }
}