DTSearch IndexJob Add File To Index

The code sample below demonstrates how to add files to an index in dtsearch.

using dtSearch.Engine;
using System.IO;
using System.Text;

namespace SCSO.Search.Engine
{
    public class IndexController
    {

         public void UpdateIndex(string indexPath, string tempFolder, List<string> filesToAdd)
         {
             using (var job = new IndexJob())
             {
            
                job.ActionAdd = true;
                job.IndexPath = indexPath;
                job.IndexingFlags = IndexingFlags.dtsIndexCacheText |
                                                 IndexingFlags.dtsAlwaysAdd | IndexingFlags.dtsIndexCacheTextWithoutFields;
                job.ToAddFileListName = CreateIndexCommitFile(tempFolder, filesToAdd);
                 job.Execute();

               }

          }

          private static string CreateIndexCommitFile(string tempFolder, List<string> files)
          {
               var fileName = Path.Combine(tempFolder,"IndexCommitFile.txt");
               if (File.Exists(fileName)) File.Delete(fileName);

               var sb = new StringBuilder();

               foreach (var file in files)
               {
                   sb.AppendLine(file);
                }

               File.WriteAllText(fileName, sb.ToString());

                 return fileName;
            }

     }
}