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I have a string in which i have to find PNR number. To get PNR number i have to check two condition
(a) First in Passenger should be more than one.
(b) Second String contain ITINERARY REBOOKED.

if both upper condition exist then only PNR number extract from the string otherwise no
example of strings

C#
 string First=@"RT29WHVE
--- TST RLR ---                                                                 
   RP/NYC1S21DD/NYC1S21DD            WS/SU   6MAY13/0503Z   29WHVE // This is PNR number                
   NYC1S21DD/9525GY/6MAY13                                                         
 1.KHOON/FRANCIS   2.MEH/SAY   3.MEH/PRAY   4.MEH/MAW      //Passenger more than one                    
 5.REH/LAW   6.REH/PAE   7.REH/DO   8.REH/LEE   9.REH/HEH                      
 10  US 152 T 12MAY 7 GEGPHX HK9   300P 534P 12MAY  E  US/A4PRHM                
 11  US 184 T 12MAY 7 PHXLAS HK9   815P 923P 12MAY  E  US/A4PRHM                
 12  US 392 K 13MAY 1 LASCLT HK9   115A 827A 13MAY  E  US/A4PRHM                
 13  US4286 K 13MAY 1 CLTFAY HK9   955A1050A 13MAY  E  US/A4PRHM                
     OPERATED BY SUBSIDIARY/FRANCHISE                                           
 14 MIS 1A HK9 NYC 11JAN-THANK YOU FOR YOUR BUSINESS                            
 15 AP NYC9103161516                                                            
 16 APE FRANCISKHON@GMAIL.COM                                                   
 17 TK OK06MAY/NYC1S21DD//ETUS                                                  
 18 SSR DOCS US HK1 ////09NOV83/M//KHOON/FRANCIS/P1                             
 19 SSR DOCS US HK1 ////01JAN92/M//MEH/SAY/P2                                   
 20 SSR DOCS US HK1 ////01JAN62/M//MEH/PRAY/P3                                  
 21 SSR DOCS US HK1 ////01JAN96/M//MEH/MAW/P4                                   
 22 SSR DOCS US HK1 ////15APR89/M//REH/LAW/P5                                   
 23 SSR DOCS US HK1 ////11NOV97/M//REH/PAE/P6                                   
 24 SSR DOCS US HK1 ////01JAN59/M//REH/DO/P7                                    
 25 SSR DOCS US HK1 ////05OCT88/M//REH/LEE/P8  
)>SP1
--- TST RLR ---                                                                
-ASSOCIATE PNR-                                                                
RP/NYC1S21DD/NYC1S21DD            WS/SU   6MAY13/0503Z   XXXXXX                
  1.KHOON/FRANCIS                                                              
  2  US 152 T 12MAY 7 GEGPHX HK1   300P 534P 12MAY  E  US/A4PRHM               
  3  US 184 T 12MAY 7 PHXLAS HK1   815P 923P 12MAY  E  US/A4PRHM               
  4  US 392 K 13MAY 1 LASCLT HK1   115A 827A 13MAY  E  US/A4PRHM               
  5  US4286 K 13MAY 1 CLTFAY HK1   955A1050A 13MAY  E  US/A4PRHM               
     OPERATED BY SUBSIDIARY/FRANCHISE                                          
  6 MIS 1A HK1 NYC 11JAN-THANK YOU FOR YOUR BUSINESS                           
  7 AP NYC9103161516                                                           
  8 APE FRANCISKHON@GMAIL.COM                                                  
  9 TK OK06MAY/NYC1S21DD//ETUS                                                 
 10 SSR DOCS US HK1 ////09NOV83/M//KHOON/FRANCIS                               
 11 OSI US TKT NO 037-7244752856                                               
 12 OSI US TKT NO 037-7244752857                                               
 13 OSI US TKT NO 037-7244752858                                               
 14 OSI US TKT NO 037-7244752859                                               
 15 OSI US TKT NO 037-7244752860                                               
 16 OSI US TKT NO 037-7244752861                                               
 17 OSI US TKT NO 037-7244752862                                               
 18 OSI US TKT NO 037-7244752863     
FXR                                                                                                                                 
01 KHOON/FRANC*                                                                
ITINERARY REBOOKED         //It contain ITINERATY REBOOKED so fetch that PNR numebr                                                    
LAST TKT DTE 06MAY13 - SEE ADV PURCHASE                                        
------------------------------------------------------------                   
     AL FLGT  BK   DATE  TIME  FARE BASIS      NVB  NVA   BG                   
 GEG                                                                           
XPHX US   152 K *  12MAY 1500  KXA0NL6P        12MAY12MAY 0P                   
 LAS US   184 K *  12MAY 2015  KXA0NL6P        12MAY12MAY 0P                   
XCLT US   392 K    13MAY 0115  KXA7NJ6         13MAY13MAY 0P                   
 FAY US  4286 K    13MAY 0955  KXA7NJ6         13MAY13MAY 0P                   
                                                                               
USD   290.24      12MAY13GEG US X/PHX US LAS144.19KXA0NL6P                     
                  US X/CLT US FAY146.05KXA7NJ6 USD290.24END                    
USD    21.76US    ZP GEG3.90PHX3.90LAS3.90CLT3.90XT USD                        
USD     5.00AY    15.60ZP USD 9.00XF GEG4.50PHX4.50                            
USD    24.60XT                                                                 
USD   341.60                                                                   
BG CXR: US                                                                     
PRICED WITH VALIDATING CARRIER US - REPRICE IF DIFFERENT VC                    
>                                                 PAGE  2/ 3                   
>";

string Second=@"rt298BFB
--- TST RLR MSC ---                                                            
RP/NYC1S21DD/NYC1S21DD            UA/RM   6MAY13/0452Z   298BFB // This is PNR number               
NYC1S21DD/9999WS/6MAY13                                                        
  1.BELIEU/KENNETH E(ADT)   2.BELIEU/RUTH J(ADT)                               
  3  UA 646 Q 22JUN 6*PDXORD HK2   603A1150A 22JUN  E  UA/GW0LVJ               
  4  UA1735 Q 22JUN 6*ORDBWI HK2   115P 409P 22JUN  E  UA/GW0LVJ               
  5  UA 209 S 01JUL 1*BWIIAH HK2   545A 800A 01JUL  E  UA/GW0LVJ               
  6  UA 258 S 01JUL 1*IAHPDX HK2   856A1120A 01JUL  E  UA/GW0LVJ               
  7 MIS 1A HK2 NYC 11JAN-THANK YOU FOR YOUR BUSINESS                           
  8 MCO XD ARC 06MAY/USD 44.00/*SERVICE FEE/P1                                 
  9 AP NYC5093952712                                                           
 10 API CHEAPOAIR, 213 WEST 35TH STREET, SUITE 1201, NEW YORK,                 
       NY 10001                                                                
 11 TK OK06MAY/NYC1S21DD//ETUA                                                 
 12 SSR SEAT UA KK2 PDXORD/36AN,P1/36BN,P2/RB/S3                               
 13 SSR SEAT UA KK2 ORDBWI/31FN,P1/31EN,P2/RB/S4                               
 14 SSR SEAT UA KK2 BWIIAH/24EN,P1/24FN,P2/RB/S5                               
 15 SSR SEAT UA KK2 IAHPDX/25AN,P1/25BN,P2/RB/S6                               
 16 SSR DOCS UA HK1 ////18JUL41/M//BELIEU/KENNETH/E/P1                         
 17 SSR DOCS UA HK1 ////23JUL49/F//BELIEU/RUTH/J/P2                            
 18 OSI UA TKT NO 016-7244752674                                               
 19 OSI UA TKT NO 016-7244752675    
)>sp1
--- TST RLR MSC ---                                                            
-ASSOCIATE PNR-                                                                
RP/NYC1S21DD/NYC1S21DD            UA/RM   6MAY13/0452Z   XXXXXX                
  1.BELIEU/KENNETH E(ADT)                                                      
  2  UA 646 Q 22JUN 6*PDXORD HK1   603A1150A 22JUN  E  UA/GW0LVJ               
  3  UA1735 Q 22JUN 6*ORDBWI HK1   115P 409P 22JUN  E  UA/GW0LVJ               
  4  UA 209 S 01JUL 1*BWIIAH HK1   545A 800A 01JUL  E  UA/GW0LVJ               
  5  UA 258 S 01JUL 1*IAHPDX HK1   856A1120A 01JUL  E  UA/GW0LVJ               
  6 MIS 1A HK1 NYC 11JAN-THANK YOU FOR YOUR BUSINESS                           
  7 MCO XD ARC 06MAY/USD 44.00/*SERVICE FEE                                    
  8 AP NYC5093952712                                                           
  9 API CHEAPOAIR, 213 WEST 35TH STREET, SUITE 1201, NEW YORK,                 
       NY 10001                                                                
 10 TK OK06MAY/NYC1S21DD//ETUA                                                 
 11 SSR SEAT UA KK1 PDXORD/36AN,P1/RB/S2                                       
 12 SSR SEAT UA KK1 BWIIAH/24EN,P1/RB/S4                                       
 13 SSR SEAT UA KK1 IAHPDX/25AN,P1/RB/S5                                       
 14 SSR SEAT UA KK1 ORDBWI/31FN,P1/RB/S3                                       
 15 SSR DOCS UA HK1 ////18JUL41/M//BELIEU/KENNETH/E                            
 16 OSI UA TKT NO 016-7244752674                                               
 17 OSI UA TKT NO 016-7244752675                                               
 18 AI AN2124780335       
)>FXR
FXR                                                                              
01 BELIEU/KENNE*                                                               
NO REBOOKING REQUIRED FOR LOWEST AVAILABLE FARE //it contain no booking so dont want that PNR number                               
LAST TKT DTE 07MAY13 - SEE ADV PURCHASE                                        
------------------------------------------------------------                   
     AL FLGT  BK   DATE  TIME  FARE BASIS      NVB  NVA   BG                   
 PDX                                                                           
XCHI UA   646 Q    22JUN 0603  QA7KN           22JUN22JUN 0P                   
 BWI UA  1735 Q    22JUN 1315  QA7KN           22JUN22JUN 0P                   
XHOU UA   209 S    01JUL 0545  SA7KN           01JUL01JUL 0P                   
 PDX UA   258 S    01JUL 0856  SA7KN           01JUL01JUL 0P                   
                                                                               
USD   547.91      22JUN13PDX UA X/CHI UA BWI323.72QA7KN UA                     
                  X/HOU UA PDX224.19SA7KN USD547.91END                         
USD    41.09US    ZP PDX3.90ORD3.90BWI3.90IAH3.90XT USD                        
USD    10.00AY    15.60ZP USD 16.50XF PDX4.50ORD4.50BWI4.50                    
USD    32.10XT    IAH3.00                                                      
USD   631.10                                                                   
BG CXR: UA                                                                     
PRICED WITH VALIDATING CARRIER UA - REPRICE IF DIFFERENT VC                    
>";


The regex i am using rite now is (\s[A-Z0-9]{6}\s{2})(?=(.*ITINERARY.REBOOKED.?))
it will give me PNR number which contain ITINERARY REBOOKED but i want first condition to
Thanks in advance
Posted
Updated 6-May-13 22:43pm
v2

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