如何从列表中查找倒数第二个元素? [英] How to find second last element from a List?

问题描述

我有一个List<string>，例如:

 List<String> lsRelation = new List<String>{"99","86","111","105"}.

现在，我想找到倒数第二个字符串Number 111.

Now i want to find the Number 111 that is the second to last string.

所以我尝试过:

String strSecondLast=lsrelation.Last() - 2;

这不起作用.因此，如何使用Last()查找列表的倒数第二个元素.

which doesn't work. So how can i find the second to last element of a List using Last().

推荐答案

使用:

if (lsRelation.Count >= 2)
    secLast = lsRelation[lsRelation.Count - 2];

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