MPTagThat.FileNameToTag.FileNameToTag.ReplaceParametersWithValues C# (CSharp) Method

        private void ReplaceParametersWithValues(List<ParameterPart> parameters, bool preview)
        {
            List<string> splittedFileValues = new List<string>();

              // Split up the file name
              // We use already the FileName from the Track instance, which might be already modified by the user.
              string file;
              if (preview)
            file = String.Format(@"{0}\{1}", Path.GetDirectoryName(trackPreview.FullFileName),
                             Path.GetFileNameWithoutExtension(trackPreview.FullFileName));
              else
            file = String.Format(@"{0}\{1}", Path.GetDirectoryName(track.FullFileName),
                             Path.GetFileNameWithoutExtension(track.FileName));

              string[] fileArray = file.Split(new[] {'\\'});

              // Now set Upper Bound depending on the length of parameters and file
              int upperBound;
              if (parameters.Count >= fileArray.Length)
            upperBound = fileArray.Length - 1;
              else
            upperBound = parameters.Count - 1;

              // Now loop through the delimiters and assign files
              for (int i = 0; i <= upperBound; i++)
              {
            ParameterPart parameterpart = parameters[i];
            string[] delims = parameterpart.Delimiters;
            List<string> parms = parameterpart.Parameters;

            // Set the part of the File to Process
            string filePart = fileArray[fileArray.GetUpperBound(0) - i];
            splittedFileValues.Clear();

            int upperBoundDelims = delims.GetUpperBound(0);
            for (int j = 0; j <= upperBoundDelims; j++)
            {
              if ((j == upperBoundDelims) | (delims[j] != ""))
              {
            if (filePart.IndexOf(delims[j]) == 0 && j == upperBoundDelims)
            {
              splittedFileValues.Add(filePart);
              break;
            }

            int delimIndex = filePart.IndexOf(delims[j]);
            if (delimIndex > -1)
            {
              splittedFileValues.Add(filePart.Substring(0, filePart.IndexOf(delims[j])));
              filePart = filePart.Substring(filePart.IndexOf(delims[j]) + delims[j].Length);
            }
              }
            }

            int index = -1;
            // Now we need to Update the Tag Values
            foreach (string parm in parms)
            {
              index++;
              switch (parm)
              {
            case "<A>":
              if (preview)
                trackPreview.Artist = splittedFileValues[index];
              else
                track.Artist = splittedFileValues[index];
              break;

            case "<T>":
              if (preview)
                trackPreview.Title = splittedFileValues[index];
              else
                track.Title = splittedFileValues[index];
              break;

            case "<B>":
              if (preview)
                trackPreview.Album = splittedFileValues[index];
              else
                track.Album = splittedFileValues[index];
              break;

            case "<Y>":
              if (preview)
                trackPreview.Year = splittedFileValues[index];
              else
                track.Year = Convert.ToInt32(splittedFileValues[index]);
              break;

            case "<K>":
              if (preview)
                trackPreview.Track = splittedFileValues[index];
              else
                track.TrackNumber = Convert.ToUInt32(splittedFileValues[index]);
              break;

            case "<k>":
              if (preview)
                trackPreview.NumTrack = splittedFileValues[index];
              else
                track.TrackCount = Convert.ToUInt32(splittedFileValues[index]);
              break;

            case "<D>":
              if (preview)
                trackPreview.Disc = splittedFileValues[index];
              else
                track.DiscNumber = Convert.ToUInt32(splittedFileValues[index]);
              break;

            case "<d>":
              if (preview)
                trackPreview.NumDisc = splittedFileValues[index];
              else
                track.DiscCount = Convert.ToUInt32(splittedFileValues[index]);
              break;

            case "<G>":
              if (preview)
                trackPreview.Genre = splittedFileValues[index];
              else
                track.Genre = splittedFileValues[index];
              break;

            case "<O>":
              if (preview)
                trackPreview.AlbumArtist = splittedFileValues[index];
              else
                track.AlbumArtist = splittedFileValues[index];
              break;

            case "<C>":
              if (preview)
                trackPreview.Comment = splittedFileValues[index];
              else
                track.Comment = splittedFileValues[index];
              break;

            case "<N>":
              if (preview)
                trackPreview.Conductor = splittedFileValues[index];
              else
                track.Conductor = splittedFileValues[index];
              break;

            case "<R>":
              if (preview)
                trackPreview.Composer = splittedFileValues[index];
              else
                track.Composer = splittedFileValues[index];
              break;

            case "<U>":
              if (preview)
                trackPreview.Grouping = splittedFileValues[index];
              else
                track.Grouping = splittedFileValues[index];
              break;

            case "<S>":
              if (preview)
                trackPreview.SubTitle = splittedFileValues[index];
              else
                track.SubTitle = splittedFileValues[index];
              break;

            case "<M>":
              if (preview)
                trackPreview.Interpreter = splittedFileValues[index];
              else
                track.Interpreter = splittedFileValues[index];
              break;

            case "<E>":
              if (preview)
                trackPreview.BPM = splittedFileValues[index];
              else
                track.BPM = Convert.ToInt32(splittedFileValues[index]);
              break;

            case "<X>":
              // ignore it
              break;
              }
            }
              }
        }