### Rounding With a Placeholder

var num = 5.432424;
Console.WriteLine("{0:f2}", num);


In this case after the number we add :f2, which will limit the number to 2 decimal places and will work like Math.Round(…). You should keep in mind that the number after the letter f means to how many decimal places the number is rounded (i.e. it can be f3 or f5).