How to display just first 2 decimals unequal to 0

Question

How can I display the number with just the 2 not=zero decimals?

Example:

For 0.00045578 I want 0.00045 and for 1.0000533535 I want 1.000053

Answer 1

Try this function, using parsing to find the # of fractional digits rather than looking for zeros (it works for negative #s as well):

private static string GetTwoFractionalDigitString(double input)
{
    // Parse exponential-notation string to find exponent (e.g. 1.2E-004)
    double absValue = Math.Abs(input);
    double fraction = (absValue - Math.Floor(absValue));
    string s1 = fraction.ToString("E1");
    // parse exponent peice (starting at 6th character)
    int exponent = int.Parse(s1.Substring(5)) + 1;

    string s = input.ToString("F" + exponent.ToString());

    return s;
}