双字符串格式问题 [英] double string format problem

问题描述

我的问题是。我试着以一种格式写数字。在此格式中，如果此数字是仅在数字后面放置的整数。



输入输出

12.012。

12.212.2



我试过

Hi, my problem is that. I tried to write number in a format. In this format, if this number is an integer only put after the digits.

Input Output
12.0 "12."
12.2 "12.2"

I tried

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

，但它不起作用。它将整数转换为不带点符号的字符串。



你能帮帮我吗？



谢谢你提前。

, but it is not work. It convert integer number to string without dot notation.

Can you help me pls?

Thanks in advance.

推荐答案

阅读有关String.Format和自定义数字格式的文档。



替换 ＃带有0的字符。

Read the documentation on String.Format and Custom Number Formats.

Replace the "#" characters with "0".

我不知道在没有任何小数位的数字之后显示小数点的任何文化设置（我已经通过这里安装的整个 CultureInfo.GetCultures 。你能得到的最接近的是Dave Kreskoviak的解决方案

I''m not aware of any culture settings that display a decimal point after a number that does not have any decimal places (I''ve been through the entire CultureInfo.GetCultures that are installed here). The closest you can get is with Dave Kreskoviak''s solution of

String.Format("{0:0.0##}", number))

但是在给出上面的例子之后，这似乎并不是你想要的。



你必须覆盖正常的格式化过程，例如

but that doesn''t seem to be what you''re after given your example above.

You will have to override the normal formatting process e.g.

private string myDoubleToString(double d)
{
    if (d % 1 == 0)
        return d.ToString() + CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator;
    else
        return d.ToString();
}

或重新考虑为什么你想要在这些情况下得到小数点尾 - 这很奇怪。

or reconsider why you want the trailing decimal point in these circumstances - it''s rather strange.

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