.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Example

using System;

namespace Samples
{
  public class CharEnumeratorSample
  {
    public static void Main()
    {
      string s = "Hello world!";
      CharEnumerator e = s.GetEnumerator();
      while(e.MoveNext())
        Console.Write(e.Current);
      Console.WriteLine();
    }
  }
}

The output is

Hello world!