Adds Toggle Line Numbers to Tools Menu I want to not add it to the toolbar instead of the tools menu.

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.ComponentModel.Design;
using Microsoft.VisualStudio.Shell;
using EnvDTE;
using EnvDTE80;

namespace None.TLN
{
    [PackageRegistration(UseManagedResourcesOnly = true)]
    [InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)]
    [ProvideMenuResource("Menus.ctmenu", 1)]
    [Guid(GuidList.guidTLNPkgString)]
    public sealed class TLNPackage : Package
    {
        private DTE2 _applicationObject;
        private bool _currentValue;
        private List<string> _editorTypes;

        protected override void Initialize()
        {
            _applicationObject = (DTE2)GetService(typeof(DTE));
            _currentValue      = (bool)_applicationObject.Properties[@"TextEditor", "Basic"].Item(@"ShowLineNumbers").Value;
            _editorTypes       = new List<string>{"PlainText","CSharp","HTML","C/C++","XML","CSS","Basic","CSS","FSharp","Javascript","Xaml"};
            base.Initialize();

            var mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
            if (null == mcs) return;
            mcs.AddCommand(new MenuCommand(MenuItemCallback, new CommandID(GuidList.guidTLNCmdSet, (int)PkgCmdIDList.toggleLineNumbers)));
        }

        private void MenuItemCallback(object sender, EventArgs e)
        {
            for (var i = 0; i < _editorTypes.Count; i++)
            {
                _applicationObject.Properties[@"TextEditor", _editorTypes[i]].Item(@"ShowLineNumbers").Value = !_currentValue;
            }
            _currentValue = !_currentValue;
        }

    }
}