c# how do I count lines in a textfile

Question

any problems with doing this?

int  i = new StreamReader(\"file.txt\").ReadToEnd().Split(new char[] {\'\\n\'}).Length

Answer 1

If you're looking for a short solution, I can give you a one-liner that at least saves you from having to split the result:

int i = File.ReadAllLines("file.txt").Count;

But that has the same problems of reading a large file into memory as your original. You should really use a streamreader and count the line breaks as you read them until you reach the end of the file.