Don't remove trailing zero on ToString

Question

I have two doubles, 4.0 and 4.12345. I want to use ToString on them to receive just that, 4.0 and 4.12345, however the default ToString trims the 0 in 4.0 and if I try to use formats with F / N, I either have to pad or to round. Is there an easy generic solution I can use?

Thanks!

Answer 1

You can use the below format:

double number = 4.12345;
string s = number.ToString(".0####");

Which still maintains the '.0':

double number = 4.0;
string s = number.ToString(".0####"); 

You can add as many hashes as you want digits.

Answer 2

You can use the format below to convert double to string.

{0:0.00000} 

More zeros can be added according to your need.

double myNumber = 4.12345;
var s = string.Format("{0:0.00000}", myNumber);
Console.WriteLine(s);

Updated code using ToString

double myNumber = 4.12345;
string s = myNumber.ToString("0.00000");
Console.WriteLine(s);