using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?:[\+-]?\d{4}(?!\d{2}\b))(?:(-?)(?:(?:0[1-9]|1[0-2])(?:\1(?:[12]\d|0[1-9]|3[01]))?|W(?:[0-4]\d|5[0-2])(?:-?[1-7])?|(?:00[1-9]|0[1-9]\d|[12]\d{2}|3(?:[0-5]\d|6[1-6])))(?:[T\s](?:(?:(?:[01]\d|2[0-3])(?:(:?)[0-5]\d)?|24\:?00)(?:[\.,]\d+(?!:))?)?(?:\2[0-5]\d(?:[\.,]\d+)?)?(?:[zZ]|(?:[\+-])(?:[01]\d|2[0-3]):?(?:[0-5]\d)?)?)?)?$";
string input = @"2021
2021-10
2021-00
2021-13
2021-10-24
2021-10-00
2021-10-32
2021-10-24T10
2021-10-24T48
2021-10-24T10:30
2021-10-24T10:95
2021-10-24T10:30:47
2021-10-24T10:30:78
2021-10-24T10:30:47.5
2021-10-24T10:30:47.333
2021-10-24T10:30:47.333333
2021-10-24T10:30:47Z
2021-10-24T10:30:78Z
2021-10-24T10:30:47.5Z
2021-10-24T10:30:47.333Z
2021-10-24T10:30:47.333333Z
2021-10-24T10:30:47-03:00
2021-10-24T10:30:78-03:00
2021-10-24T10:30:47.5-03:00
2021-10-24T10:30:47.333-03:00
2021-10-24T10:30:47.333333-03:00
Nate☬158⚈̥̥̥̥̥̀ᴗ✯";
RegexOptions options = RegexOptions.CultureInvariant | RegexOptions.Singleline | RegexOptions.IgnoreCase | 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