UserDefinedText TXXX read

[Tofa]

hi,

i wanna read the TXXX tag out of my mp3.

UltraID3 testid3 = new UltraID3();
testid3.Read("file");

ID3FrameCollection frames = testid3.ID3v2Tag.Frames.GetFrames(CommonMultipleInstanceID3v2FrameTypes.UserDefinedText);

if (frames.Count > 0)
{
	for (int i = 0; i < frames.Count; i++)
        {
        	richTextBox1.Text += frames[i].ToString();
	}
}

I get as output this:

User Text: '2raumwohnung'; Description: 'ALBUMARTISTSORT'; Text Encoding: Unicode
User Text: 'album'; Description: 'MusicBrainz Album Type'; Text Encoding: Unicode
User Text: 'd26534c8-e37b-c870-26fb-05dca6805980'; Description: 'MusicIP PUID'; Text Encoding: Unicode
User Text: '5579a23d-c411-4930-987d-ff89d77c1c12'; Description: 'MusicBrainz Album Artist Id'; Text Encoding: Unicode
User Text: '5579a23d-c411-4930-987d-ff89d77c1c12'; Description: 'MusicBrainz Artist Id'; Text Encoding: Unicode
User Text: '094638690627'; Description: 'BARCODE'; Text Encoding: Unicode
User Text: '7c2d9263-8ed7-411c-913a-325d124853b7'; Description: 'MusicBrainz Album Id'; Text Encoding: Unicode
User Text: 'official'; Description: 'MusicBrainz Album Status'; Text Encoding: Unicode
User Text: 'B000M05T4U'; Description: 'ASIN'; Text Encoding: Unicode
User Text: '3869062'; Description: 'CATALOGNUMBER'; Text Encoding: Unicode
User Text: 'DE'; Description: 'MusicBrainz Album Release Country'; Text Encoding: Unicode

How can i get the "User Text" and the "Description" apart?
frames[i] has only CommonFrameType/Equals/Exceptions/FrameDescription/FrameFlags/FrameID/FrameName/FrameType/GetHashCode/GetType/IsSet/ToString/Version.

Thanks for every hint

Tofa