That code you're replying about was carefully and correctly written. You just replied as if you know how it works just so you could look like you know what you're talking about.

If you're unlucky, someone who actually knows how File.ReadLines() works will show up in an hour or two and explain that it's lazily evaluated.

:) touche

Wrong. ReadLines returns an IEnumerable<string> and lets you read line by line without loading the entire file into memory: http://msdn.microsoft.com/en-us/library/dd383503%28v=vs.110%....