修剪数组中的所有字符串

Question

我有一个字符串,如:

string email = "a@a.com, b@b.com, c@c.com";

我想把它拆分成一个字符串数组

如果我这样做:

string[] emails = email.Split(',');

我在每个电子邮件地址前面都有空格(在第一个电子邮件地址之后):

emails[0] = "a@a.com"
emails[1] = " b@b.com"
emails[2] = " c@c.com"

获得这个的最佳方法是什么(更好的解析方法或修剪数组中所有字符串的方法)？

emails[0] = "a@a.com"
emails[1] = "b@b.com"
emails[2] = "c@c.com"

Answer 1

emails.Split(',').Select(email => email.Trim()).ToArray()

Answer 2

您也可以替换所有出现的空格,因此避免使用foreach循环:

string email = "a@a.com, b@b.com, c@c.com";    
string[] emails = email.Replace(" ", "").Split(',');

Answer 3

以下任一项都可以使用.我推荐第一个,因为它更准确地表达了连接字符串.

string[] emails = email.Split(new string[] { ", " }, StringSplitOptions.None);
string[] emails = email.Split(new char[] { ' ', ',' }, StringSplitOptions.RemoveEmptyEntries);

Answer 4

你可以使用Trim():

string email = "a@a.com, b@b.com, c@c.com";
string[] emails = email.Split(',');
emails = (from e in emails
          select e.Trim()).ToArray();

Answer 5

使用Regex.Split以避免修剪

var emails = Regex.Split(email, @",\s*");

Answer 6

.NET 5 已经到来，随之而来的是解决此问题的现代解决方案：

string[] emails = email.Split(',', StringSplitOptions.TrimEntries);

Answer 7

您可以使用这样的单行解决方案:

string[] emails = text.Split(',', StringSplitOptions.RemoveEmptyEntries);
Array.ForEach<string>(emails, x => emails[Array.IndexOf<string>(emails, x)] = x.Trim());