private void Choose_Button_Click(object sender, RoutedEventArgs e)
        {
            var openFileDialog = new OpenFileDialog
            {
                Multiselect = true,
                Title       = "Select files",
                Filter      = "Audio files(*.mp3;*.waw;*.ra;*.au;*.ram*;*.aiff;*.alac;*.flac)|*.mp3;*.waw;*.ra;*.au;*.ram*;*.aiff;*.alac;*.flac| All files(*.*)|*.*"
            };

            if (openFileDialog.ShowDialog() == false)
            {
                return;
            }

            foreach (var fileName in openFileDialog.FileNames)
            {
                var trackLoadUserControl = new TrackLoadUserControl(fileName);
                Grid.SetRow(trackLoadUserControl, i++);
                Load_Grid.Children.Add(trackLoadUserControl);
            }
        }
        private void Drop_Border_Drop(object sender, DragEventArgs e)
        {
            Drop_Border.Background = new SolidColorBrush(Color.FromRgb(230, 230, 230));

            if (Playlist_CheckBox.IsChecked == true)
            {
                var playlistLoadUserControl = new PlaylistLoadUserControl((string[])e.Data.GetData(DataFormats.FileDrop));
                Grid.SetRow(playlistLoadUserControl, i);
                Load_Grid.Children.Add(playlistLoadUserControl);
            }

            else
            {
                var FileNames = (string[])e.Data.GetData(DataFormats.FileDrop);
                foreach (var fileName in FileNames)
                {
                    var trackLoadUserControl = new TrackLoadUserControl(fileName);
                    Grid.SetRow(trackLoadUserControl, i++);
                    Load_Grid.Children.Add(trackLoadUserControl);
                }
            }
        }