的String.Format参数顺序烦恼 [英] String.Format parameter order annoyance

问题描述

这真是烦人C＃怎么好像强迫你明确地命名的String.Format每一个参数的索引，如果你想在某个地方添加其他参数，您可能已重新建立索引的字符串或把你的新参数在最后。

有没有办法让C＃来自动执行此操作？

例如。 （我知道这是没有意义的学究，它只是一个例子：）

我开始：

 的String.Format（{0} {1} {1} {2} {3}，A，b，C，D）
  

如果我想在开始添加一个参数，我可以执行下列操作之一：

 的String.Format（{4} {0} {1} {1} {2} {3}，A，b，C，D，E）
的String.Format （{0} {1} {2} {2} {3} {4}，E，A，b，C，D）
  

在Delphi比如我可以做这个等价的：

 的String.Format （{} {} {} {2} {} {}，E，A，b，C，D）
  

< DIV CLASS =h2_lin>解决方案

好了，没有什么在C＃自动为您做到这一点。你总是可以编写自己的方法来做到这一点，但坦率地说我会找到它的可读性。还有很多更想去做（IMO）了解你的最后一行确实比前一个东西。当你点击 {2} 你必须在精神上原路返回，并与替换原来的项目{3} 来跳过 {2} 等。

我个人更喜欢代码，需要更长的时间打字，但很明显阅读。

it's really annoying how C# seems to force you to explicitly name the index of every parameter in String.Format, if you want to add another parameter somewhere you either have to re-index the string or put your new parameter at the end.

Is there a way to get C# to do this automatically?

e.g. (I know this is pointless pedants, it's just an example :)

I start with:

String.Format("{0} {1} {1} {2} {3}", a, b, c, d)

if I want to add a parameter at the beginning I can do one of the following:

String.Format("{4} {0} {1} {1} {2} {3}", a, b, c, d, e)
String.Format("{0} {1} {2} {2} {3} {4}", e, a, b, c, d)

in Delphi for example I could do the equivalent of this:

String.Format("{} {} {} {2} {} {}", e, a, b, c, d)

解决方案

Well, there's nothing in C# to do this automatically for you. You could always write your own method to do it, but frankly I'd find it less readable. There's a lot more thinking to do (IMO) to understand what your final line does than the previous one. When you hit the {2} you've got to mentally backtrack and replace the previous item with {3} to skip the {2} etc.

Personally I prefer code which takes a bit longer to type, but is clear to read.

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