How to: Read Characters from a String

using System;
using System.IO;

public class CharsFromStr
{
    public static void Main()
    {
        // Create a string to read characters from.
        string str = "Some number of characters";
        // Make a char array the size of the source string
        char[] b = new char[str.Length];
        // Create an instance of StringReader and attach it to the string.
        StringReader sr = new StringReader(str);
        // Read 13 characters into the array that holds the string,
        // starting at the third array member.
        sr.Read(b, 0, 13);
        // Display the output.
        Console.WriteLine(b);
        // Read the rest of the string from the current position in the
        // source string into the array, starting at the 6th array member.
        sr.Read(b, 5, str.Length - 13);
        // Display the output.
        Console.WriteLine(b);
        // Close the StringReader.
        sr.Close();
    }
}