C# 字符串格式化和填充

发布于 2024-08-17 05:40:01 字数 508 浏览 3 评论 0原文

看起来这应该是一件简单的事情，但我一直没能做到正确。我看过http://idunno.org/archive/2004/14/ 01/122.aspx供参考。

例子：我想打印一个双精度值表，每个双精度输出具有 3 位小数精度，并占用 10 个空格（左对齐）。从概念上讲，我尝试了类似的方法，但它仅适用于精度或填充，而不适用于两者：

foreach(line in lines)
{
    foreach (double val in line)
    {
         Console.Write("{0:0.000,-10}", val);
    }

    Console.WriteLine()
}

更新：我可以在非常简单的场景中使用 padleft/padright，如果我有更复杂的输出，它会变得不是很简洁。有没有类似sprintf的东西？

原文

Seems like this should be something straightforward, but I haven't been able to get it right. I've looked at http://idunno.org/archive/2004/14/01/122.aspx for reference.

Example:
I would like to print a table of double values, with each double output having 3 decimal precision, and take up 10 spaces (left aligned). Conceptually, I tried something like this, but it only works with precision OR padding, not both:

foreach(line in lines)
{
    foreach (double val in line)
    {
         Console.Write("{0:0.000,-10}", val);
    }

    Console.WriteLine()
}

Update: I can use padleft/padright in very simple scenarios, if i have more complicated output it becomes not very concise. Is there something similar to sprintf?

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笑，眼淚并存 2024-08-24 05:40:01

尝试

double d = 3.14;
Console.WriteLine("{0,10:0.000}", d);

P.S：看看这篇文章作为字符串格式化入门。另外， string.Format 应该允许您执行 sprintf 所做的一切 - 实际上更多......您还想做什么？

Try

double d = 3.14;
Console.WriteLine("{0,10:0.000}", d);

P.S: have a look at this article as a primer on string formatting. Also, string.Format should allow you doing everything sprintf does - and actually more... what else are you trying to do?

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