Question

I have to create regex for file name patterns, the program I am building in c# sharp would check against the pattern if the file name matches the regex :

ATNMR20111101-BATCH2240_20111113-091322.txt 
DGTHLK826908_20111113-091413.txt  
2011-12-01_DGTVUE_TUR_20111208-121517.txt 
BVVHUO_DAILY_YOU_092011_20111215-022931.txt

how do I create a pattern for these, any help is appreciated.

Answer 1

Depending on what you want to match/capture:

[A-Z0-9-_]+_\d+-\d{6}\.txt

this would help you parse:

BVVHUO_DAILY_YOU_092011 _ 20111215 - 022931 .txt
[      this part      ]   [ this ]   [this]
      [A-Z0-9-_]+            \d+       \d{6}

that’s just from me trying to determine a pattern across your strings