valami val;
		public Form2(valami asd)
        {
			val = asd;

            InitializeComponent();

			listView1.FullRowSelect = true;

			foreach (valami.ValamiStruktura item in val.valami_data)
			{
				string[] valami =
				{
					item.MusicType,
					item.Artist,
					item.Something,
					item.Amount.ToString(),
					item.SpecialArtist.ToString(),
					item.Price.ToString()
				};

				ListViewItem nyu = new ListViewItem(valami);
				listView1.Items.Add(nyu);
			}

			button1.Click += (s, e) =>
			{
				for (int i = 0; i < listView1.Items.Count; i++)
				{
					if (listView1.Items[i].Selected)
					{
						listView1.Items[i].Remove();
						i--;
					}
				}
			};

			button2.Click += (s, e) =>
			{
				ClearData();
			};

			button3.Click += (s, e) =>
			{
				Export(s, e);
			};

			button4.Click += (s, e) =>
			{
				Import(s, e);
			};

			button5.Click += (s, e) =>
			{
				this.Close();
			};
		}

		private void Import(object s, EventArgs e)
		{
			using (OpenFileDialog open = new OpenFileDialog())
			{
				open.Filter = "txt files (*.txt)|*.txt";
				if (open.ShowDialog() != DialogResult.OK)
				{
					return;
				}
				var file = open.OpenFile();

				System.IO.StreamReader read = new System.IO.StreamReader(file);
				while (!read.EndOfStream)
				{
					string line = read.ReadLine();
					string[] temp = line.Split(',');
					listView1.Items.Add(temp[0]);
				}
				read.Close();
			}
		}

		private void Export(object s, EventArgs e)
		{
			System.IO.StreamWriter write = new System.IO.StreamWriter("data.txt");
			foreach (valami.ValamiStruktura item in val.valami_data)
			{
				write.WriteLine(
					item.MusicType + "," +
					item.Artist + "," +
					item.Something + "," +
					item.Amount + "," +
					item.SpecialArtist
				);
			}
			write.Close();
		}

		private void ClearData()
		{
			listView1.Items.Clear();
			val.valami_data.Clear();
		}