authentication – c# console application Login System

Hello so i want a login system for my c# console application Here is the code that i used for my form application but i want it to work for my console application

I just want help with this like it would be nice if someone fixes it for me
as this is for my c# console application but this is for a form application

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;

namespace WhiteList
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }



        private void button1_Click_1(object sender, EventArgs e)
        {
            string whitelist = new System.Net.WebClient() { Proxy = null }.DownloadString("Your pastbin link");
            string blacklist = new System.Net.WebClient() { Proxy = null }.DownloadString("Your pastbin link");

            if (whitelist.Contains(textBox1.Text))
            {
                MessageBox.Show("Whitelisted!");
                Form2 frm2 = new Form2();
                frm2.Show();
                this.Hide();
            }
            else
            {
                MessageBox.Show("Blacklisted! Closing...");
                Application.Exit();
            }

            if (blacklist.Contains(textBox1.Text))
            {
                MessageBox.Show("Blacklisted! Closing...");
                Application.Exit();
            }
        }
    }
}

Tags: authentication, c#c#, login