What is the best way to perform the following with c#: Need to check a folder and find all Files that start with E and have 2 numbers after the E and have a file ext for .chk. Then I need to find the file with the lowest number after the E. Ex) E03.chk E01.chk E02.chk in this example, I would need to get E01.chk file name returned.

Reputation: 1401

Checking a folder for a file

What is the best way to perform the following with c#:

Need to check a folder and find all Files that start with E and have 2 numbers after the E and have a file ext for .chk.
Then I need to find the file with the lowest number after the E.

Ex)

E03.chk
E01.chk
E02.chk

in this example, I would need to get E01.chk file name returned.

Upvotes: 1

Answers (3)

Michael Edenfield

Reputation: 28338

You'll want to use the Directory class, specifically: Directory.EnumerateFiles(), which accepts a search wildcard pattern.

Upvotes: 0

Talljoe

Reputation: 14827

var regex = new Regex(@"^E\d\d$");
var file = Directory.GetFiles(path, "E??.chk")
                    .Where(f => regex.IsMatch(File.GetFileNameWithoutExtension(f)))
                    .OrderBy(f => f)
                    .FirstOrDefault();

Upvotes: 6

Non

Reputation: 2006

You could use FileInfo and DirectoryInfo from System.IO.

Upvotes: 0

Checking a folder for a file

Answers (3)

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