C# 带有 3 个尾随小数位、一个十进制千位分隔符和后面的逗号的格式数字
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format number with 3 trailing decimal places, a decimal thousands separator, and commas after that
提问by Brett
This is probably a simple question, and I'm sure there's a way to do it with string.format(), NumberFormatInfo, CultureInfoor some combination of them, but I need to display large numeric values with 3 trailing decimal places, a decimal instead of a comma for the thousands separator, and then a comma for the millions separator and up.
这可能是一个简单的问题，我敢肯定有办法做到这一点的string.format()，NumberFormatInfo，CultureInfo或其中的一些组合，但我需要3尾随小数显示大数值，小数，而不是为成千上万的一个逗号分隔符，然后是数百万分隔符及以上的逗号。
The input is either a whole number or a number followed by up to three decimal places (20000, 123.456, 12.2)
输入是整数或后跟最多三位小数的数字（20000、123.456、12.2）
For example:
例如：
142650 should display as 142,650.000
142650 应显示为 142,650.000
11200.50 should display as 11,200.500
11200.50 应显示为 11,200.500
123.456 should remain 123.456
123.456 应该保持在 123.456
I suppose it's the same as dividing the value by 1000 and then using string.format("{0:f3}", value), but I was hoping to find something that didn't take arithmetic.
我想这与将值除以 1000 然后使用 相同string.format("{0:f3}", value)，但我希望找到不需要算术的东西。
String.Format("{0:#,#.000}", value)gets me close, but it puts a leading 0 on small numbers, so 1.256 is displaying as 01.256, when I need it to remain just 1.256
String.Format("{0:#,#.000}", value)让我接近，但它在小数字上放置了一个前导 0，所以 1.256 显示为 01.256，当我需要它保持为 1.256 时
采纳答案by Brett
The format String.Format("{0:#,0.000}", value)ended up doing it for me. It works for whole numbers and numbers with anywhere from 1 to 3 trailing decimal places.
格式String.Format("{0:#,0.000}", value)最终为我做了。它适用于整数和带有 1 到 3 个尾随小数位的数字。
