Truncate number of digit of double value in C#

Question

How can i truncate the leading digit of double value in C#,I have tried Math.Round(doublevalue,2) but not giving the require result. and i didn\'t find any other method in M

Answer 1

There are a lot of answers using Math.Truncate(double). However, the approach using Math.Truncate(double) can lead to incorrect results. For instance, it will return 5.01 truncating 5.02, because multiplying of double values doesn't work precisely and 5.02*100=501.99999999999994

If you really need this precision, consider, converting to Decimal before truncating.

public static double Truncate(double value, int precision)
{
    decimal power = (decimal)Math.Pow(10, precision);
    return (double)(Math.Truncate((decimal)value * power) / power);
}

Still, this approach is ~10 times slower.