private void BackgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            try
            {
                if (isFindArtist)
                {
                    SaveLyric();
                }
                if (!cancelProcess)
                {
                    PositionNum++;
                    LocalInfoList.ScrollIntoView(LocalInfoList.SelectedItem);
                    backgroundWorker.RunWorkerAsync();
                    processNum = 100;
                }
            }
            catch (IOException ex)
            {
                MessageBox.Show("保存歌词时出现问题:" + ex.Message);
            }

            //else cancelProcess = false;
        }