我如何在C＃中的字符串获得最后四个字符？ [英] How do I get the last four characters from a string in C#?

问题描述

假设我有一个字符串：

 字符串的myString =34234234d124;
 

我要得到这个字符串，它是D124的最后四个字符。我可以使用子，但它需要一对夫妇code线的。

是否有可能得到这样的结果在一个前pression用C＃？

解决方案

  mystring.Substring（Math.Max​​（0，mystring.Length  -  4））;这//多少行是什么？
 

如果你是积极的字符串的长度至少是4，那么它更短：

  mystring.Substring（mystring.Length  -  4）;
 

Suppose I have a string:

string mystring = "34234234d124";

I want to get the last four characters of this string which is "d124". I can use SubString, but it needs a couple of lines of code.

Is it possible to get this result in one expression with C#?

解决方案

mystring.Substring(Math.Max(0, mystring.Length - 4)); //how many lines is this?

If you're positive the length of your string is at least 4, then it's even shorter:

mystring.Substring(mystring.Length - 4);

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