显示小数而没有尾随零的最佳方法 [英] Best way to display decimal without trailing zeroes

问题描述

是否有一个显示格式化程序可以在 c# 中将小数作为这些字符串表示形式输出而不进行任何舍入?

Is there a display formatter that will output decimals as these string representations in c# without doing any rounding?

// decimal -> string

20 -> 20
20.00 -> 20
20.5 -> 20.5
20.5000 -> 20.5
20.125 -> 20.125
20.12500 -> 20.125
0.000 -> 0

{0.#} 将四舍五入，并且使用某些 Trim 类型的函数将不适用于网格中绑定的数字列.

{0.#} will round, and using some Trim type function will not work with a bound numeric column in a grid.

推荐答案

您是否有需要显示的最大小数位数?(您的示例最多为 5 个).

Do you have a maximum number of decimal places you'll ever need to display? (Your examples have a max of 5).

如果是这样，我认为使用0.#####"进行格式化会满足您的要求.

If so, I would think that formatting with "0.#####" would do what you want.

    static void Main(string[] args)
    {
        var dList = new decimal[] { 20, 20.00m, 20.5m, 20.5000m, 20.125m, 20.12500m, 0.000m };

        foreach (var d in dList)
            Console.WriteLine(d.ToString("0.#####"));
    }

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