Error when get a string from database use with TagFile open mp3 c#

Question

After getting the path of an mp3 file in the database, I used that path to create a TagLib.File but couldn't read the string. My database I used is Microsoft SQL Server 2019.

using(var db= new KhangDuong())
            {
                var listTrack = db.Tracks.Where(x=>x.TrackID>1).ToList();
                List<Track> track = new List<Track>();
                track=listTrack;
                foreach (var item in track)
                {
                    TagLib.File tagFile = TagLib.File.Create(@item.Track_path);
                    AudioFileReader reader = new AudioFileReader(@item.Track_path);
                    TimeSpan duration = reader.TotalTime;
                    string artist = tagFile.Tag.Artists[0];
                    string album = tagFile.Tag.Album;
                    DAL_ListQueue create = new DAL_ListQueue();
                    create.createItem(floatLayout, item.TrackName, artist,album,duration.Minutes+":"+duration.Seconds);
                }

            }

Picture

I have copy a path for example: C:\Users\ACER\Music\Ahxello - Frisbee.mp3

I have tried many ways but it still doesn't work with the item.Track_path string, but a fixed string then it works:

using(var db= new KhangDuong())
            {
                var listTrack = db.Tracks.Where(x=>x.TrackID>1).ToList();
                List<Track> track = new List<Track>();
                track=listTrack;
                foreach (var item in track)
                {
                    string path = @"C:\Users\ACER\Music\Ahxello - Frisbee.mp3";
                    TagLib.File tagFile = TagLib.File.Create(path);
                    AudioFileReader reader = new AudioFileReader(path);
                    TimeSpan duration = reader.TotalTime;
                    string artist = tagFile.Tag.Artists[0];
                    string album = tagFile.Tag.Album;
                    DAL_ListQueue create = new DAL_ListQueue();
                    create.createItem(floatLayout, item.TrackName, artist,album,duration.Minutes+":"+duration.Seconds);
                }

            }

I also tried replacing the above fixed string with item.Track_path but it didn't work.

Here's how I enter the path into the database:

OpenFileDialog file = new OpenFileDialog();
            file.Filter = "All Media Files|*.mp3;*.flac;*.m4a;";
            file.Multiselect = true;

            if (file.ShowDialog() == DialogResult.OK)
            {
                List<string> files = new List<string>();
                files = file.FileNames.ToList();
                BUS_Track.addTrack(files, KhangDataView);
            }

Answer 1

I found the error, my error, it was true that a string in my database, some utf-8 mp3 path was injected into my database and caused it to turn into '?'. My above code is working fine. Thanks to everyone who helped me.