I'm using the following code and everything works fine for me:
TagLib.File file = TagLib.File.Create(/*path to your mp3 file*/);
TagLib.Picture pic = new TagLib.Picture();
pic.Type = TagLib.PictureType.FrontCover;
pic.Description = "Cover";
pic.MimeType = System.Net.Mime.MediaTypeNames.Image.Jpeg;
MemoryStream ms = new MemoryStream();
/*your image*/.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
ms.Position = 0;
pic.Data = TagLib.ByteVector.FromStream(ms);
file.Tag.Pictures = new TagLib.IPicture[] { pic };
file.Save();
ms.Close();
According to your provided code, the only thing I noticed is, that my code is using following line
file.Tag.Pictures = new TagLib.IPicture[] { pic };
instead of
f.Tag.Pictures = new TagLib.IPicture[1] { pic };
So simply try, if it works when you remove the 1
inside the square brackets.
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