Autocad 2018 NETLOAD not showing my command method

I'm trying to make a plug in for Autocad 2018 with Visual Studio 2019 using .Net Firstly, I am getting a warning in VS when the debug is "Any CPU" the bug goes off when I switch to x64. After building the project and having the .dll file and I go to Autocad and load it using NETLOAD command, when I try to load my method or "CommandMethod" it doesn't show up.

I tried changing the .Net Framework to whatever version I have from 4.7.2 to 4.5

Tried different codes from other sources and still no results Should I use a higher version of AutoCad? or should I use a lower version of VS like 2017? What could be the problem? Here's the code:

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices.Core;

[assembly: CommandClass(typeof(Testing.Class1))]
   namespace Testing
{
    public class Class1
    {
        [CommandMethod("MyFirstCommand")]
        public void my()
        {

        Document doc=Application.DocumentManager.MdiActiveDocument;
        Database db = doc.Database;
        Editor edt = doc.Editor;

        using (Transaction trans=db.TransactionManager.StartTransaction())
        {
            try
            {

                BlockTable bt;
                bt = trans.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
                BlockTableRecord btr;
                btr = trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;

                // send message to the user
                edt.WriteMessage("\nDrawing a line objet");

                Point3d pt1 = new Point3d(0, 0, 0);
                Point3d pt2 = new Point3d(100, 0, 0);

                Line ln = new Line(pt1, pt2);
                ln.ColorIndex = 1;
                btr.AppendEntity(ln);
                trans.AddNewlyCreatedDBObject(ln, true);
                trans.Commit();
            }
            catch (System.Exception e)
            {
                edt.WriteMessage("Error Encountered" + e.Message);
                trans.Abort();
            }
        }
        edt.WriteMessage("Script loaded");

    }

}

}

Solution

Check your references. I have had problems with this in the past when I have a broken or incorrect reference.

Are any of your settings for your AutoCAD references different than the settings in the below image?