Select Plane Example (C#)

//---------------------------------------------------------
// Preconditions: Open a new part document.
//
// Postconditions:
// 1. Selects the Right Plane.
// 2. Examine the graphics area.
//---------------------------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System.Runtime.InteropServices;
using System;
namespace GetPlanes_CSharp.csproj
{
    partial class SolidWorksMacro
    {


        public void Main()
        {
            // Select Right Plane (1-based index)
            const long ReqPlane = 3;

            ModelDoc2 swModel = default(ModelDoc2);
            Feature swFeat = default(Feature);
            long PlaneCount = 0;
            bool bRet = false;

            swModel = (ModelDoc2)swApp.ActiveDoc;
            swFeat = (Feature)swModel.FirstFeature();

            while ((swFeat != null))
            {
                if ("RefPlane" == swFeat.GetTypeName())
                {
                    PlaneCount = PlaneCount + 1;

                    if (ReqPlane == PlaneCount)
                    {
                        bRet = swFeat.Select2(false, 0);
                        break;
                    }
                }

                swFeat = (Feature)swFeat.GetNextFeature();
            }

        }



        public SldWorks swApp;

    }
}