using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(^(0?[1-9]|[12][0-9]|3[01])\.(0?[1-9]|1[012])\.(19|20)\d\d( ([01]?[0-9]|2[0-3]):[0-5][0-9])?$|^\{ts \'((19|20)\d\d)\-(0?[1-9]|1[012])\-(0?[1-9]|[12][0-9]|3[01]) ([01]?[0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]\'\}$|^$)";
string input = @"30.12.2013";
Match m = Regex.Match(input, pattern);
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