Ionic.Zip.ZipFile.AddFile C# (CSharp) Method

        public ZipEntry AddFile(string fileName)
        {
            return AddFile(fileName, null);
        }

		/// <summary>
		/// Do the work.
		/// </summary>
		protected override void OnExecute(ServerCommandProcessor theProcessor)
		{
			using (ZipFile zip = new ZipFile(_zipFile))
			{
				zip.ForceNoCompression = !NasSettings.Default.CompressZipFiles;
				zip.TempFileFolder = _tempFolder;
				zip.Comment = String.Format("Archive for study {0}", _studyXml.StudyInstanceUid);
				zip.UseZip64WhenSaving = Zip64Option.AsNecessary;

				// Add the studyXml file
				zip.AddFile(Path.Combine(_studyFolder,String.Format("{0}.xml",_studyXml.StudyInstanceUid)), String.Empty);

				// Add the studyXml.gz file
				zip.AddFile(Path.Combine(_studyFolder, String.Format("{0}.xml.gz", _studyXml.StudyInstanceUid)), String.Empty);

			    string uidMapXmlPath = Path.Combine(_studyFolder, "UidMap.xml");
                if (File.Exists(uidMapXmlPath))
                    zip.AddFile(uidMapXmlPath, String.Empty);

				// Add each sop from the StudyXmlFile
				foreach (SeriesXml seriesXml in _studyXml)
					foreach (InstanceXml instanceXml in seriesXml)
					{
						string filename = Path.Combine(_studyFolder, seriesXml.SeriesInstanceUid);
						filename = Path.Combine(filename, String.Format("{0}.dcm", instanceXml.SopInstanceUid));

						zip.AddFile(filename, seriesXml.SeriesInstanceUid);
					}

				zip.Save();
			}
		}