String Reader in C#

String reader is used to read the characters in a string.

using System;
using System.IO;

public class ForgetCode
    public static void Main()
        string str = "Coming from Forget Code";
        char[] b = new char[str.Length];

        using (StringReader sr = new StringReader(str))
            // Read 15 characters from the string into the array.
            sr.Read(b, 0, 15);

Coming from For