Equals and ==

using System;

public class Test
{
	static void Main()
	{
        // Create two equal but distinct strings
        string a = new string(new char[] {'h', 'e', 'l', 'l', 'o'});
        string b = new string(new char[] {'h', 'e', 'l', 'l', 'o'});
        
        Console.WriteLine (a==b);
        Console.WriteLine (a.Equals(b));
        
        // Now let's see what happens with the same tests but
        // with variables of type object
        object c = a;
        object d = b;
        
        Console.WriteLine (c==d);
        Console.WriteLine (c.Equals(d));
    }
}

The results are:

True
True
False
True