using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\b(?P<date>
(?P<day>
(?:(?:0[1-9]|[12]\d|30)(?=[- :\.\/](?:04|06|09|11)))|
(?:(?:0[1-9]|[12]\d|3[01])(?=[- :\.\/](?:01|03|05|07|08|10|12)))|
(?:(?:0[1-9]|[12]\d)(?=[- :\.\/]02[- :\.\/]\d\d(?:([02468][048])|([13579][26])))
(?![- :\.\/]02[- :\.\/](?:([2468][1235679])|([13579][01345789])00)))|
(?:(?:0[1-9]|1\d|2[0-8])(?=[- :\.\/]02[- :\.\/]))
)[- :\.\/]
(?P<month>0[1-9]|1[012])[- :\.\/]
(?P<year>[1-9]\d{3})
)\b";
string input = @"";
RegexOptions options = RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace;
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