CODEWITHSUNDEEP
c#
Geek
Geek

Reputation: 233

read and output a text file using streamreader char by char

what i am trying to do is to read the file a.txt and output each character in a single line i am having a real difficulty to solve this problem any help will be really appreciated.if you write the code please comment so i can understand more clearly as i am beginner.thanks

namespace ConsoleApplication13
{
    class Program
    {
        static void Main(string[] args)
        {
            using (StreamReader r = new StreamReader("a.txt"))
            {

               string @char;
               while((@char = r.ReadBlock() != null))
                foreach(char i in @char)
                {
                    Console.WriteLine(i);

                }

            }

        }
    }
}

Upvotes: 3

Views: 14845

Answers (1)

Marc Gravell
Marc Gravell

Reputation: 1062640

i want to read the file and output all the file char by char , each char in new line

OK; there's a lot of ways to do that; the simplest would be (for small files):

string body = File.ReadAllText("a.txt");
foreach (char c in body) Console.WriteLine(c);

To use ReadBlock to handle the file in chunks (not lines):

using (StreamReader r = new StreamReader("a.txt"))
{
    char[] buffer = new char[1024];
    int read;
    while ((read = r.ReadBlock(buffer, 0, buffer.Length)) > 0)
    {
        for (int i = 0; i < read; i++)
            Console.WriteLine(buffer[i]);
    }
}

This reads blocks of up to 1024 characters at a time, then writes out whatever we read, each character on a new line. The variable read tells us how many characters we read on that iteration; the read > 0 test (hidden slightly, but it is there) asks "have we reached the end of the file?" - as ReadBlock will return 0 at the end.

Upvotes: 10

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