Format Decimal 2 Places - no trailing zeroes

问题

The format: #,# formats my number but it rounds my decimals up. I need to keep my decimals. Is there a format for that?

Thank you.

回答1:

#,#.###

Ad as many #s as needed.
To always show decimal places, use 0s instead.

回答2:

You can truncate decimal places with

(int)d

If you need two decimals you can write

(int)(100*d)/100.0

---

(int)(100*1.99999)/100.0 ==> 1.99

回答3:

If you are trying to display it as a string, try this...

yourVariable.ToString("{0:F2}");

This will format the string into a fixed point with two floating numbers.

The Microsoft Custom Numeric Format Strings and Microsoft Standard Numeric Format Strings pages have useful data you could refer to. :-)

来源：https://stackoverflow.com/questions/9707611/format-decimal-2-places-no-trailing-zeroes