using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^\d\d(?:([.,])\d(?:\d(?:\1\d\d?|)|)|)(?: \d\d(?:([.,])\d(?:\d(?:\2\d\d?|)|)|))*$";
string input = @"Нужно захватывать такие виды оквэдов (1 === \d{1}):
11
11.1
11,1
11.11
11,11
11.11.1
11,11,1
11.11.11
11,11,11
11 11.11 11.11.11
11 11,11 11,11,11
Недопустимы:
11,11.11
11.11,11
11.1.11
11.1.1
11.
11,
11.1.
11,1,
11.11.
11,11,
11.11.1.
11,11,1,
11.11.11.
11,11,11,
";
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