Add Objects to Selection List Example (C#)

//----------------------------------------------------------------------------
// Preconditions: Open a model that contains Sketch1 and Sketch2.
//
// Postconditions:
// 1. Inspect the Immediate Window.
// 2. The selection list containing Sketch1 is suspended.
// 3. Another selection list is populated with two objects.
// 4. The type of the last object in the selection list is reported.
// 5. The previous selection list with Sketch1 is resumed.
// 6. Sketch1 is placed in edit mode.
// ---------------------------------------------------------------------------
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Runtime.InteropServices;
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
namespace AddObjectToSelectionList_CSharp.csproj
{
    partial class SolidWorksMacro
    {

        ModelDoc2 swModel;
        SelectionMgr selMgr;
        SelectData selData;
        FeatureManager featMgr;
        Feature feat;
        DispatchWrapper[] arrObjIn = new DispatchWrapper[2];
        Feature[] selObjs = new Feature[2];
        object selobj;
        int featCount;
        int i;
        string typeName;
        int j;
        int numAdded;
        bool boolstatus;
        int ret;
        int count;

        public void Main()
        {
            swModel = (ModelDoc2)swApp.ActiveDoc;
            selMgr = (SelectionMgr)swModel.SelectionManager;
            selData = (SelectData)selMgr.CreateSelectData();
            featMgr = swModel.FeatureManager;

            featCount = featMgr.GetFeatureCount(true);
            feat = (Feature)swModel.FirstFeature();
            j = 0;
            for (i = 0; i <= featCount; i++)
            {

                if ((feat != null))
                {
                    typeName = feat.Name;
                    typeName = typeName.ToUpper();
                    if ("SKETCH" == typeName.Substring(0, 6))
                    {
                        selObjs[j] = feat;
                        arrObjIn[j] = new DispatchWrapper(selObjs[j]);
                        j = j + 1;
                    }
                    feat = (Feature)feat.GetNextFeature();
                }
            }


            // Add one object to the current selection list
            boolstatus = swModel.Extension.SelectByID2("Sketch1", "SKETCH", 0, 0, 0, false, 0, null, 0);

            // Start a new selection list
            ret = selMgr.SuspendSelectionList();
            Debug.Print("The current selection list with " + ret + " object (Sketch1) is suspended.");

            // Add two objects to the new selection list
            numAdded = selMgr.AddSelectionListObjects((arrObjIn), selData);
            Debug.Print("A new selection list is started.");

            // Get number of objects in the new selection list (should be 2)
            count = selMgr.GetSelectedObjectCount();
            Debug.Print("The selection list now contains " + count + " objects.");

            // Get the last object in the new selection list
            selobj = selMgr.GetSelectedObject6(count, -1);
            Debug.Print("The last object in the selection list is of swSelectType_e = " + selMgr.GetSelectedObjectType3(count, -1) + ".");

            // Go back to the previous selection list
            selMgr.ResumeSelectionList();
            Debug.Print("The previous selection list is resumed.");

            // Get the number of objects in the selection list (should be 1)
            count = selMgr.GetSelectedObjectCount();
            Debug.Print("The selection list now contains " + count + " object (Sketch1).");

            swModel.EditSketch();
            Debug.Print("Sketch1 is in edit mode.");

        }

        public SldWorks swApp;

    }
}