Question

I have a excel file that must have this name format, where xxx is a number and yymmdd is a date. Only xxx and yymmdd change, the rest is always the same.

CDFSDDRCxxxCurryymmdd.xls

What is a regex I can use to check if it is correct??

Answer 1

In C# I think you can try something like this :

"CDFSDDRC(?<xxx>[0-9]+)Curr(?<yymmdd>[0-9][0-9][0|1][0-9][0-3][0-9])\.xls"

But you will have to check matches.Groups[“yymmdd”].value once more to check for special cases such as CDFSDDRC123Curr321539.xls that match but contains an incorrect date.