using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"
# allow multiple groups with the same name
(?J)
# protocol user host-ip port path path path querystring fragment
^
#protocol
(?:(?<scheme>[a-zA-Z][a-zA-Z\d+-.]*):)?
(?|
#slash-slash
\/\/
#userinfo
(?:
#user
(?<user>[a-zA-Z\d\-._~\!$&'()*+,;=%]*)
#password
(?::(?<pass>[a-zA-Z\d\-._~\!$&'()*+,;=:%]*))?
@)?
#host-ip
(?<host>(?:[a-zA-Z\d-.%]+)|(?:\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(?:\[(?:[a-fA-F\d.:]+)\]))?
#port
(?::(?<port>\d*))?
#slash-path
(?<path>
(?:\/ [a-zA-Z\d\-._~\!$&'()*+,;=:@%]* )*
)
#slash-path
|(?<user>)(?<pass>)(?<host>)(?<port>)
(?<path>\/ [a-zA-Z\d\-._~\!$&'()*+,;=:@%]+(?:\/[a-zA-Z\d\-._~\!$&'()*+,;=:@%]*)*)?
#path
|(?<user>)(?<pass>)(?<host>)(?<port>)
(?<path> [a-zA-Z\d\-._~\!$&'()*+,;=:@%]+(?:\/[a-zA-Z\d\-._~\!$&'()*+,;=:@%]*)*)
)?
#querystring
(?:\?(?<query>[a-zA-Z\d\-._~\!$&'()*+,;=:@%\/?]*))?
#fragment
(?:\#(?<fragment>[a-zA-Z\d\-._~\!$&'()*+,;=:@%\/?]*))?
$
";
string input = @"https://regex101.com/
https://regex101.com/thing/blah.foo
https://regex101.com:28801/thing/blah/patterns?where_foo=bar&where_primary_access_node=true
https://regex101.com:8443/thing/index.html#/landing";
RegexOptions options = RegexOptions.IgnorePatternWhitespace | RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx