[ ASP.NET ] การเรื่องค่าในตัวแปรไม่ให้ซ้ำกัน

        static void Main(string[] args)
        {
            string[] planets = { "Mercury", "Venus",
                "Earth", "Mars", "Jupiter",
                "Saturn", "Uranus", "Neptune" };

            Console.WriteLine("One or more planets begin with 'M': {0}",
                Array.Exists(planets, element => element.StartsWith("M")));

            Console.WriteLine("One or more planets begin with 'T': {0}",
                Array.Exists(planets, element => element.StartsWith("T")));

            Console.WriteLine("Is Pluto one of the planets? {0}",
                Array.Exists(planets, element => element == "Pluto"));
        }

    Public Sub Main()
        Dim planets() As String = {"Mercury", "Venus",
                                    "Earth", "Mars", "Jupiter",
                                    "Saturn", "Uranus", "Neptune"}

        Console.WriteLine("One or more planets begin with 'M': {0}",
            Array.Exists(planets, Function(element)
                                      Return element.StartsWith("M")
                                  End Function))

        Console.WriteLine("One or more planets begin with 'T': {0}",
            Array.Exists(planets, Function(element)
                                      Return element.StartsWith("T")
                                  End Function))

        Console.WriteLine("Is Pluto one of the planets? {0}",
            Array.Exists(planets, Function(element)
                                      Return element.Equals("Pluto")
                                  End Function))

    End Sub

           //ตัดตัวซ้ำของ Array ออก ใช้คุณสมบัติ Distinct
           int[] s = { 1, 2, 3, 3, 4 };
            int[] q = s.Distinct().ToArray();

           // รวม Array 2D เป็น 1D
            int[,] oGridCells = { { 1, 2 }, { 3, 4 } };
            int[] oResult = new int[4];
            System.Buffer.BlockCopy(oGridCells, 0, oResult, 0, 16);