public System.Data.DataTable GetSystemDataSet()
 {
     using (CommonServiceClient client = SoapClientFactory.CreateCommonServiceClient())
     {
         byte[] validationTicket = WebServiceSecurity.GetLoginTicket();
         byte[] receivedData     = client.GetSystemDataSet(validationTicket);
         return(ZipTools.DecompressionDataSet(receivedData).Tables[0]);
     }
 }