如何使用多个分隔符拆分字符串

Question

假设我有一个字符串，它包含以下内容：

string mystr = "*myid*-myemail-:mypwd:*myid2*-myemail2-:mypwd2:*myid3*-myemail3-:mypwd3:";

我想获得每个具有"*"的子字符串，然后将它们添加到一个新字符串中，然后获得每个具有与具有"-"的值相同的"："的值，所以我尝试了使用split方法，但它不起作用。

string mystr = "*myid*-myemail-:mypwd:*myid2*-myemail2-:mypwd2:*myid3*-myemail3-:mypwd3:";
string[] myid = mystr.Split('*');
string[] myemail = mystr.Split('-');
string[] mypwd = mystr.Split(':');
string ids = "";
string emails = "";
string pwds = "";
foreach (string k in myid)
{
Console.WriteLine("THESE ARE THE IDS");
Console.WriteLine(k);
}
foreach (string k in myemail)
{
Console.WriteLine("THESE ARE THE EMAILS");
Console.WriteLine(k);
}
foreach (string k in mypwd)
{
Console.WriteLine("THESE ARE THE PASSWORDS");
Console.WriteLine(k);
}

这是控制台输出：

THESE ARE THE IDS
THESE ARE THE IDS
myid
THESE ARE THE IDS
-myemail-:mypwd:
THESE ARE THE IDS
myid2
THESE ARE THE IDS
-myemail2-:mypwd2:
THESE ARE THE IDS
myid3
THESE ARE THE IDS
-myemail3-:mypwd3:
THESE ARE THE EMAILS
*myid*
THESE ARE THE EMAILS
myemail
THESE ARE THE EMAILS
:mypwd:*myid2*
THESE ARE THE EMAILS
myemail2
THESE ARE THE EMAILS
:mypwd2:*myid3*
THESE ARE THE EMAILS
myemail3
THESE ARE THE EMAILS
:mypwd3:
THESE ARE THE PASSWORDS
*myid*-myemail-
THESE ARE THE PASSWORDS
mypwd
THESE ARE THE PASSWORDS
*myid2*-myemail2-
THESE ARE THE PASSWORDS
mypwd2
THESE ARE THE PASSWORDS
*myid3*-myemail3-
THESE ARE THE PASSWORDS
mypwd3
THESE ARE THE PASSWORDS

这就是我想要的样子：

THESE ARE THE PASSWORDS
mypwd
mypwd2
mypwd3
THESE ARE THE EMAILs
myemail
myemail2
myemail3
THESE ARE THE IDS
myid
myid2
myid3

Answer 1

您可以使用正则表达式进行以下操作：

string mystr = "*myid*-myemail-:mypwd:*myid2*-myemail2-:mypwd2:*myid3*-myemail3-:mypwd3:";
var matches = Regex.Matches(mystr, @"*(?<Id>[^*]+)*-(?<Email>[^-]+)-:(?<Password>[^:]+):");

然后，您可以按以下方式访问匹配项：

foreach (Match match in matches)
{
Console.WriteLine("Id=" + match.Groups["Id"].Value);
Console.WriteLine("Email=" + match.Groups["Email"].Value);
Console.WriteLine("Password=" + match.Groups["Password"].Value);
}

或者，如果您想将ID、电子邮件和密码分组在一起，请使用：

var ids = matches.OfType<Match>().Select(m => m.Groups["Id"].Value);
var emails = matches.OfType<Match>().Select(m => m.Groups["Email"].Value);
var passwords = matches.OfType<Match>().Select(m => m.Groups["Password"].Value);
foreach (string id in ids)
Console.WriteLine(id);
foreach (string email in emails)
Console.WriteLine(email);
foreach (string password in passwords)
Console.WriteLine(password);

在线试用。

但是，请注意，这可能会中断，因为电子邮件地址可能包含连字符，密码可能包含冒号。在这种情况下，您需要为输入文本提供一种更健壮的格式。