For Spaces

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.Threading;

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

        private void letsdothis_Click(object sender, EventArgs e)
        {
            after.Text = string.Empty;
            string[] Head = { "Дата анонса", "Дата релиза", "Дата выпуска", "Дата выхода", "Год выпуска", "Год выхода", "Жанр", "Разработчик", "Издатель", "Платформы" };
            string [] Before;
            int tmp = 0;
           Before =  this.before.Text.Split(new Char[] {'\n'});   
       
           for (int i=0; i < Head.Length;i++)
           {
               for(int z = 0; z<Before.Length; z++)
               {
                   if(Before[z].Contains(Head[i]))
                   {
                       this.after.Text += Before[z] + "\n";
                   }                    
               }                          
           }

           for (int i = 0; i < Before.Length; i++)
           {
               for (int z = 0; z < Head.Length; z++)
               {
                   if (Before[i].Contains(Head[z]))
                   {
                       tmp = 1;
                   }                   
               }
               if (tmp != 1)
               {
                   this.after.Text += Before[i] + "\n";
               }
               tmp = 0;
           }                                

        }
    }
}