FizzBuzzNoAbbreviations.cs

using UnsignedInteger = System.UInt16; // Sorry, I can't unabbreviate it on the RHS

// https://twitter.com/taylonr/status/712277308363542530

namespace FizzBuzz
{
    class Program
    {
        static void Main(System.String[] arguments)
        {
            System.String outputValue = System.String.Empty; // Yeah yeah, StringBuilder

            for (UnsignedInteger currentNumber = 1; currentNumber <= 100; currentNumber += 1)
            {
                if (currentNumber % 3 == 0)
                {
                    outputValue += "Fizz";
                }
                if (currentNumber % 5 == 0)
                {
                    outputValue += "Buzz";
                }

                if (System.String.Empty == outputValue)
                {
                    outputValue = currentNumber.ToString();
                }

                System.Console.WriteLine(outputValue);
                outputValue = System.String.Empty;
            }

            System.Console.WriteLine();
            System.Console.WriteLine("Done.");
            System.Console.ReadKey();
        }
    }
}