static public void backup() { if (NetClouldMusicData == null) { throw new InvalidOperationException("备份失败,NetClouldMusicData 对象为空"); } //Task.Run(() => //{ if (File.Exists(GlobalConfigClass.XML_CLOUDMUSIC_SAVEPATH)) { File.Delete(GlobalConfigClass.XML_CLOUDMUSIC_SAVEPATH); } OtherHelper.WriteXMLSerializer(NetClouldMusicData, typeof(List <UserData>), GlobalConfigClass.XML_CLOUDMUSIC_SAVEPATH); // }); }