Enumerable.SequenceEqual<TSource>, méthode (IEnumerable<TSource>, IEnumerable<TSource>)

            class Pet
            {
                public string Name { get; set; }
                public int Age { get; set; }
            }

            public static void SequenceEqualEx1()
            {
                Pet pet1 = new Pet { Name = "Turbo", Age = 2 };
                Pet pet2 = new Pet { Name = "Peanut", Age = 8 };

                // Create two lists of pets.
                List<Pet> pets1 = new List<Pet> { pet1, pet2 };
                List<Pet> pets2 = new List<Pet> { pet1, pet2 };

                bool equal = pets1.SequenceEqual(pets2);

                Console.WriteLine(
                    "The lists {0} equal.",
                    equal ? "are" : "are not");
            }

            /*
             This code produces the following output:

             The lists are equal.
            */

            class Pet
            {
                public string Name { get; set; }
                public int Age { get; set; }
            }

            public static void SequenceEqualEx2()
            {
                Pet pet1 = new Pet() { Name = "Turbo", Age = 2 };
                Pet pet2 = new Pet() { Name = "Peanut", Age = 8 };

                // Create two lists of pets.
                List<Pet> pets1 = new List<Pet> { pet1, pet2 };
                List<Pet> pets2 =
                    new List<Pet> { new Pet { Name = "Turbo", Age = 2 }, 
                                    new Pet { Name = "Peanut", Age = 8 } };

                bool equal = pets1.SequenceEqual(pets2);

                Console.WriteLine("The lists {0} equal.", equal ? "are" : "are not");
            }

            /*
             This code produces the following output:

             The lists are not equal.
            */

public class Product : IEquatable<Product>
{
    public string Name { get; set; }
    public int Code { get; set; }

    public bool Equals(Product other)
    {

        //Check whether the compared object is null.
        if (Object.ReferenceEquals(other, null)) return false;

        //Check whether the compared object references the same data.
        if (Object.ReferenceEquals(this, other)) return true;

        //Check whether the products' properties are equal.
        return Code.Equals(other.Code) && Name.Equals(other.Name);
    }

    // If Equals() returns true for a pair of objects 
    // then GetHashCode() must return the same value for these objects.

    public override int GetHashCode()
    {

        //Get hash code for the Name field if it is not null.
        int hashProductName = Name == null ? 0 : Name.GetHashCode();

        //Get hash code for the Code field.
        int hashProductCode = Code.GetHashCode();

        //Calculate the hash code for the product.
        return hashProductName ^ hashProductCode;
    }
}

        Product[] storeA = { new Product { Name = "apple", Code = 9 }, 
                               new Product { Name = "orange", Code = 4 } };

        Product[] storeB = { new Product { Name = "apple", Code = 9 }, 
                               new Product { Name = "orange", Code = 4 } };

        bool equalAB = storeA.SequenceEqual(storeB);

        Console.WriteLine("Equal? " + equalAB);

        /*
            This code produces the following output:

            Equal? True
        */