int[] numbers = { 80, 120, 110, 90, 10, 140, 150, 50, 22, -800 };

            IOrderedEnumerable<int> sortedNum = numbers.OrderDescending();
            string aStr = string.Empty;
            for(int i = 0; i <= 2; i++)
            {
                if (sortedNum.ElementAt(i) >= 100)
                {
                    aStr += sortedNum.ElementAt(i).ToString() + "\r\n";
                }
            }
            MessageBox.Show( aStr );

            int[] numbers = { 80, 120, 110, 90, 10, 140, 150, 50, 22, -800 };

            IOrderedEnumerable<int> sortedNum = numbers.OrderDescending();
            string aStr = string.Empty;
            for(int i = 0; i <= 2; i++)
            {
                if (sortedNum.ElementAt(i) >= 100)
                {
                    aStr += sortedNum.ElementAt(i).ToString() + "\r\n";
                }
            }
            MessageBox.Show( aStr );