Different types of rounding and casting, and how they affect decimals.

RoundingExamples.cs

var numsToRound = new []{0.5, 1.5, 2.5, 3.5, 4.5};

Console.WriteLine("Banker|Away|Convert|Cast");
foreach(var num in numsToRound)
{
    var toEven = Math.Round(num);
    var awayFromZero = Math.Round(num, MidpointRounding.AwayFromZero);
    var convert = Convert.ToInt32(num);
    var cast = (int)num;
    Console.WriteLine(String.Format("  {0}   | {1}  |   {2}   | {3}  ", toEven, awayFromZero, convert, cast));
}