Hi

I am trying to look for a more effecient, better way of doing this.

Let's say we have a directory, in this directory there are various directories.

Now, most of the directories will be a numeric/integer named directory ie:

1
2
3
65
etc...

however this directory may also contain non integer/numeric names (such as "test" or "h3ll0" etc...)

What I want to do is to obtain a list of ONLY the integer directory name.

Of course, I could use a for each on each directory name and check to see if the current Char in the current directory name is a digit/numeric or not but that i do not think is the most efficient way as there maybe several hundred directories therefore it will have some performance degration if using a Char.IsDigit/IsNumeric method.

What is the best way?