Question

I am learning LINQ, and I want to read a text file (let’s say an e-book) word by word using LINQ.

This is wht I could come up with:

static void Main()
        {
            string[] content = File.ReadAllLines("text.txt");

            var query = (from c in content
                         select content);

            foreach (var line in content)
            {
                Console.Write(line+"\n");
            }

        }

This reads the file line by line. If i change ReadAllLines to ReadAllText, the file is read letter by letter.

Any ideas?

Answer 1

string[] content = File.ReadAllLines("text.txt");
var words=content.SelectMany(line=>line.Split(' ', StringSplitOptions.RemoveEmptyEntries));
foreach(string word in words)
{
}

You’ll need to add whatever whitespace characters you need. Using StringSplitOptions to deal with consecutive whitespaces is cleaner than the Where clause I originally used.

In .net 4 you can use File.ReadLines for lazy evaluation and thus lower RAM usage when working on large files.