using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?(DEFINE)(?<urlPart>[^\\\s]+))\\\\(?&urlPart)\\(?&urlPart)\\\K(?&urlPart)";
string input = @"### Positive matches
\\10.20.3.23\S$\COMPANY_NAME\Main_5e08a942f39a430db0b081736a3f1881\C_VOL-b002.spf
\\localhost\part1\selectMe
\\a\b\select-me but not me
\\a\b\select_me\c\d\e.abc more text here
This is the link \\a\b\select-me\c\d\e.abc inside a longer string
\\a\b\select_me_from_1st_link\c.abc \\a\b\selectMeFrom2ndLink\c.abc
## Negative matches
\a\b\c\dontSelectMe\e\f
\\\\dont-select-me or me
\\a \b \dont_select_me \c \d \e.abc";
RegexOptions options = 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