using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^((?:[01][0-9]?)|(?:2[0-4]?)|(?:[3-9]))(?::((?:[0-5][0-9]?)|(?:60))|:)?$";
string input = @"0
1
12
12:
12:3
12:30
1:
1:3
1:30
2
3
4
5
6
7
8
9
1:60
24:60
24:00
00:60
25:30
00:61";
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