Worst Code Ever

using System;
using System.IO;
using System.Windows.Forms;

namespace File_Sorter
{
    public partial class Form1 : Form
    {
        public string dir = @"C:\Users\xX212Xx\Desktop\SortedPaulsMusic\";

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                string[] asdf = Directory.GetFiles(folderBrowserDialog1.SelectedPath);

                int i = 0;

                foreach (string item in asdf)
                {
                    if (item.Contains(".mp3"))
                    {

                        var file = TagLib.File.Create(item);

                        if (file.Tag.Album != "" || file.Tag.Album != null)
                        {
                            if (file.Tag.Performers.Length != 0)
                            {
                                listBox1.Items.Add(file.Name);
                                listBox1.Items.Add(file.Tag.Album);
                                listBox1.Items.Add(file.Tag.Performers[0]);
                                listBox1.Items.Add(file.Name.Substring(14));

                                if (Directory.Exists(dir + file.Tag.Performers[0].Replace("\"", "") + @"\"))
                                {
                                    if (Directory.Exists(dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\"))
                                    {
                                        File.Move(file.Name, dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\" + file.Name.Substring(14));
                                    }
                                    else
                                    {
                                        Directory.CreateDirectory(dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\");
                                        File.Move(file.Name, dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\" + file.Name.Substring(14));
                                    }
                                }
                                else
                                {
                                    Directory.CreateDirectory(dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\");

                                    if (Directory.Exists(dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\"))
                                    {
                                        File.Move(file.Name, dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\" + file.Name.Substring(14));
                                    }
                                    else
                                    {
                                        Directory.CreateDirectory(dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\");
                                        File.Move(file.Name, dir + file.Tag.Performers[0].Replace("\"", "").Replace("|", "") + @"\" + file.Tag.Album.Replace(":", ";").Replace("|", "") + @"\" + file.Name.Substring(14));
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}