Reset Visibility of Sketches in Drawing View Example (C#)

//--------------------------------------------------
// Preconditions: Verify that the specified drawing
// document to open exists.
//
// Postconditions:
// 1. Opens the specified drawing document
// 2. Examine the drawing, then press F5.
// 3. Activates a drawing view and hides
//    a sketch in that drawing view .
// 4. After examining the drawing to verify,
//    press F5.
// 5. Selects the drawing view with the hidden sketch
//    and resets the visibility of all sketches in
//    that drawing view so that the drawing view
//    reflects the model.
// 6. Examine the drawing to verify that the hidden
//    sketch is visible.
//
// NOTE: Because this drawing is used elsewhere, do
// not save changes.
//-------------------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;

namespace ResetSketchVisibilityCSharp.csproj
{

    partial class SolidWorksMacro
    {

        public void Main()
        {

            ModelDoc2 swModel = default(ModelDoc2);
            DrawingDoc swDrawing = default(DrawingDoc);
            ModelDocExtension swModelDocExt = default(ModelDocExtension);
            SelectionMgr swSelMgr = default(SelectionMgr);
            View swView = default(View);
            string fileName = null;
            bool boolstatus = false;
            int errors = 0;
            int warnings = 0;

            fileName = "C:\\Users\\Public\\Documents\\SOLIDWORKS\\SOLIDWORKS 2017\\tutorial\\api\\resetsketchvisibility.SLDDRW";

            swModel = (ModelDoc2)swApp.OpenDoc6(fileName, (int)swDocumentTypes_e.swDocDRAWING, (int)swOpenDocOptions_e.swOpenDocOptions_Silent, "", ref errors, ref warnings);
            swDrawing = (DrawingDoc)swModel;
            swModelDocExt = (ModelDocExtension)swModel.Extension;
            swSelMgr = (SelectionMgr)swModel.SelectionManager;

            // Examine the drawing, then press F5
            System.Diagnostics.Debugger.Break();

            // Select a drawing view where to hide a sketch
            boolstatus = swDrawing.ActivateView("Drawing View1");

            // Hide the selected sketch
            boolstatus = swModelDocExt.SelectByID2("Sketch1@resetsketchvisibility-7@Drawing View1", "SKETCH", 0, 0, 0, false, 0, null, 0);
            swModel.BlankSketch();

            // Examine the drawing to verify that selected sketch is hidden, then press F5
            System.Diagnostics.Debugger.Break();

            // Select the drawing view with the hidden sketch
            boolstatus = swModelDocExt.SelectByID2("Drawing View1", "DRAWINGVIEW", 0, 0, 0, false, 0, null, 0);
            swView = (View)swSelMgr.GetSelectedObject6(1, -1);

            // Reset the visibility of sketches in the selected
            // drawing view so that drawing view reflects the model
            swView.ResetSketchVisibility();


        }


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

        public SldWorks swApp;

    }
}