转换字符串数组列出＆LT;串GT; [英] Convert array of strings to List<string>

问题描述

我见过的这个使用 .ToList（）的数组类型，这似乎是唯一可用的in净3.5+ 。我对那些不能在这个时候进行升级ASP.NET项目的.NET Framework 2.0的工作，所以我想知道：有另一种解决方案？一个比通过数组循环和增加每个元素名单更优雅（这是没有问题的，我只是想知道是否有出于学习目的更好的解决方案）？

I've seen examples of this done using .ToList() on array types, this seems to be available only in .Net 3.5+. I'm working with .NET Framework 2.0 on an ASP.NET project that can't be upgraded at this time, so I was wondering: is there another solution? One that is more elegant than looping through the array and adding each element to this List (which is no problem; I'm just wondering if there is a better solution for learning purposes)?

string[] arr = { "Alpha", "Beta", "Gamma" };

List<string> openItems = new List<string>();

foreach (string arrItem in arr)
{
    openItems.Add(arrItem);
}

如果我必须这样做，这样一来，有没有办法来释放从内存中挥之不去阵列后，我将其复制到我的名单？

If I have to do it this way, is there a way to deallocate the lingering array from memory after I copy it into my list?

推荐答案

只需使用的 名单，LT的这个构造; T＆GT; 。它接受任何的IEnumerable＆LT; T＆GT; 作为参数

Just use this constructor of List<T>. It accepts any IEnumerable<T> as an argument.

string[] arr = ...
List<string> list = new List<string>(arr);

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