private string CreateLocalHash()
 {
     DbJobType db = new DbJobType();
     List<JobType> jobTypes = db.GetAllJobTypes();
     StringBuilder sb = new StringBuilder();
     foreach (var jt in jobTypes)
     {
         sb.Append(Hasher.Base64Decode(jt.id));
     }
     return Hasher.CalculateMd5Hash(sb.ToString());
 }