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

Example

using System;

namespace Samples
{
  public class ObjectSample
  {
    public static void Main()
    {
      Object o = new Object();
      Console.WriteLine("Are they equal: {0}",
                        o.Equals(new Object()));
      Console.WriteLine("Are they equal: {0}",
                        o.Equals(o));
      Console.WriteLine("GetHashcode yields {0}",
                        o.GetHashCode());
      Console.WriteLine("GetHashcode yields {0}",
                        new Object().GetHashCode());
      Console.WriteLine("o.ToString(): {0}", o.ToString());
    }
  }
}

The output is

Are they equal: False
Are they equal: True
GetHashcode yields 3
GetHashcode yields 5
o.ToString(): System.Object