using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^([12]\d)?(\d\d)[\.\/\-](0?[1-9]|1[012])[\.\/\-](0?[1-9]|[12]\d|3[01])\s([01]?[0-9]|2[0-3]):[0-5][0-9]$";
string input = @"2013.11.04 11:50";
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