How to look for different types of files in a directory?

Question

public List<string> MapMyFiles() { List<FileInfo> batchaddresses = new List<FileInfo>(); foreach (object o in lstViewAddresses.Items) { try { string[] files = Directory.GetFiles(o.ToString(), "*-E.esy"); files.ToList().ForEach(f => batchaddresses.Add(new FileInfo(f))); } catch { if(MessageBox.Show(o.ToString() + " does not exist. Process anyway?", "Continue?", MessageBoxButtons.YesNo) == DialogResult.Yes) { } else { Application.Exit(); } } } return batchaddresses.OrderBy(f => f.CreationTime) .Select(f => f.FullName).ToList(); }

i would like to add to the array not only

.ESY

but also

"p-.csv"

how do i do this?

OJ. · Accepted Answer · 2010-12-21 20:48:34Z

Or just include more filters and select them together:

var filters = new[] { "*-E.esy", "*p-.csv" }; var files = filters.SelectMany(f => Directory.GetFiles(o.ToString(), f)); // .. etc.

Paul Sasik · Accepted Answer · 2010-12-21 20:44:11Z

Assuming that your code works for one set of wildcards...

Then after these lines:

string[] files = Directory.GetFiles(o.ToString(), "*-E.esy"); files.ToList().ForEach(f => batchaddresses.Add(new FileInfo(f)));

Add these:

files = Directory.GetFiles(o.ToString(), "*p-.csv"); files.ToList().ForEach(f => batchaddresses.Add(new FileInfo(f)));

Uwe Keim · Accepted Answer · 2010-12-21 20:42:38Z

0

I think you have to iterate multiple times with different wildcards.

answered Dec 21, 2010 at 20:42

Uwe Keim

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2 Comments

Uwe Keim Over a year ago

Create a List<string> and call AddRange() multiple times.

Paul Sasik Over a year ago

You already are appending, to a List, you just need to do it again with new arguments.

Brad Christie · Accepted Answer · 2010-12-21 20:51:43Z

public List<string> MapMyFiles() { List<FileInfo> batchaddresses = new List<FileInfo>(); foreach (object o in lstViewAddresses.Items) { DirectoryInfo di = new DirectoryInfo(o); if (!di.Exists && MessageBox.Show(o.ToString() + " does not exist. Process anyway?", "Continue?", MessageBoxButtons.YesNo) != DialogResult.Yes) Application.Exit(); (new List<string>(new[]{ "*-E.esy", "*p-.csv" })).ForEach(filter => { (new List<string>(di.GetFiles(filter))).ForEach(file => { batchaddresses.Add(new FileInfo(file)); }); }); } return batchaddresses.OrderBy(f => f.CreationTime).Select(f => f.FullName).ToList(); }

There's my bid; added directory check as well.

rgodlonton · Accepted Answer · 2010-12-21 21:10:52Z

 try { foreach (string searchPattern in searchPatterns) { string[] files = Directory.GetFiles(o.ToString(), searchPattern); files.ToList().ForEach(f => batchaddresses.Add(new FileInfo(f))); } }

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