Question

I’m trying to format my double to be in US dollar currency format, but I do not want trailing 00‘s if the value comes out to be a whole number.

I have tried

String.Format("{0:#,0.#0}", cost);

and

String.Format("{0:#,0.##}", cost);

The former is leaving me trailing 00 on whole number, and the latter is will give me 55.6 where I want 55.60. How can I format my value to meet both of these needs?

Answer 1

I don’t think that’s possible with a standard format string, but a trick would be:

Regex.Replace(String.Format("{0:#,##0.00}", cost),"\\.00$","");

or:

string s = String.Format("{0:#,##0.00}", cost);

if (s.EndsWith(".00"))
   s = s.Substring(0,s.Length-3);

I know, it’s ugly…