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Directory.GetFiles: Show only files starting with a numeric value

Tags:

c#

getfiles

How can i get the Directory.GetFiles to only show me files starting with a numeric value (eg. 1abc.pdf);

Directory.GetFiles(@"C:/mydir", "0-9*.pdf")
like image 369
brother Avatar asked Mar 11 '12 07:03

brother


2 Answers

To get files that start with any numeric value, regardless of the number of digits, you could use a regular expression:

var files = Directory.GetFiles(@"c:\mydir", "*.pdf")
                     .Where(file => Regex.IsMatch(Path.GetFileName(file), "^[0-9]+"));
                     //.ToArray() <-add if you want a string array instead of IEnumerable
like image 111
BrokenGlass Avatar answered Nov 15 '22 01:11

BrokenGlass


There is no way to specify this directly in the search pattern. It's capabilities are pretty limited (mainly supports the * wildcard). The best way to accomplish this is to filter on *.pdf and then use a LINQ query to filter to the ones that start with a digit

Directory
  .GetFiles(@"c:\mydir", "*.pdf")
  .Where(x => Char.IsDigit(Path.GetFileName(x)[0]));
like image 3
JaredPar Avatar answered Nov 15 '22 01:11

JaredPar