Método Enumerable.Max<TSource> (IEnumerable<TSource>)

            /// <summary>
            /// This class implements IComparable to be able to 
            /// compare one Pet to another Pet.
            /// </summary>
            class Pet : IComparable<Pet>
            {
                public string Name { get; set; }
                public int Age { get; set; }

                /// <summary>
                /// Compares this Pet to another Pet by 
                /// summing each Pet's age and name length.
                /// </summary>
                /// <param name="other">The Pet to compare this Pet to.</param>
                /// <returns>-1 if this Pet is 'less' than the other Pet, 
                /// 0 if they are equal,
                /// or 1 if this Pet is 'greater' than the other Pet.</returns>
                int IComparable<Pet>.CompareTo(Pet other)
                {
                    int sumOther = other.Age + other.Name.Length;
                    int sumThis = this.Age + this.Name.Length;

                    if (sumOther > sumThis)
                        return -1;
                    else if (sumOther == sumThis)
                        return 0;
                    else
                        return 1;
                }
            }

            public static void MaxEx3()
            {
                Pet[] pets = { new Pet { Name="Barley", Age=8 },
                               new Pet { Name="Boots", Age=4 },
                               new Pet { Name="Whiskers", Age=1 } };

                Pet max = pets.Max();

                Console.WriteLine(
                    "The 'maximum' animal is {0}.",
                    max.Name);
            }

            /*
             This code produces the following output:

             The 'maximum' animal is Barley.
            */