private void létrehozásToolStripMenuItem_Click(object sender, EventArgs e)
        {
            TvProgramEditor tvProgramEditor = new TvProgramEditor();

            if (tvProgramEditor.ShowDialog() == DialogResult.OK)
            {
                UpdateTvShowList();
            }
        }
 private void szerkesztésToolStripMenuItem_Click(object sender, EventArgs e)
 {
     foreach (ListViewItem item in programList.SelectedItems)
     {
         TvProgramEditor tvProgramEditor = new TvProgramEditor(item.Tag as TvProgram);
         if (tvProgramEditor.ShowDialog() == DialogResult.OK)
         {
             UpdateTvShowList();
         }
     }
 }