Is there an equivalent field to Label/Publisher in taglib-sharp?

Question

I'm trying to update the label/publisher field using Taglib-sharp, but I can't see it anywhere in its Object Hierarchy using Object Browser.

I've searched through google and the documentation and it looks like it's a field that's not catered for.

Before I look for alternatives (can any one suggest any?) that can edit those field, I thought I'd have one last crack and ask within the StackOverflow community who is familiar with TagLib-sharp that had a more informed opinion?

Thanks in Advance,

Francis

Update : I've investigated other libraries such as mpg123 & UltraID3Lib but they seem to have the same limitations.

Answer 1

Well, Daniel Fuchs answer didn't work for me. But, it was a beginning.

The step by step to add a field in the TagLib-sharp code is:

1. Download Source

2. Open the File TagLib/Tag.cs and insert the following code (I inserted it below PerformersSort, line 250):

   public virtual string Publisher
   {
       get { return ""; }
       set { }
   }
   

3. Open the File TagLib/Id3v2/Tag.cs and insert the following code (I inserted it below PerformersSort, line 1292):

   public override string Publisher
   {
       get { return GetTextAsString(FrameType.TPUB); }
       set { SetTextFrame(FrameType.TPUB, value); }
   }
   

4. Open the File TagLib/Id3v2/FrameTypes.cs and insert the following code (I inserted it below TPOS, line 71):

   public static readonly ReadOnlyByteVector TPUB = "TPUB";
   

5. Now comes the "Aha" thing. Open the File TagLib/CombinedTag.cs and insert the following code (I inserted it below PerformersSort, line 318):

   public override string Publisher
   {
       get
       {
           foreach (Tag tag in tags)
           {
               if (tag == null)
                   continue;
   
               string value = tag.Publisher;
   
               if (value != null)
                   return value;
           }
   
           return null;
       }
   
       set
       {
           foreach (Tag tag in tags)
               if (tag != null)
                   tag.Publisher = value;
       }
   }
   

6. Finally, compile the code.

IMPORTANT: I had problems compiling the code, as well. You must download the SharpZipLib dll (.NET 2.0) and include this dll in the taglib project. Also, I needed to install NUnit, which I made with Nuget. At last, I commented the GDK lib and all its errors inside the test code, since in production it won't be used.