using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"([4-9]{1,1}\.([6-9]{1,1}\.([9]{1,1}$|[0-9]{2,}$)|[0-9]{2,}\.[0-9]{1,}$)|[0-9]{2,}\.[0-9]{1,}\.[0-9]{1,}$)";
string input = @"Target: 4.6.9
4.6.91
4.6.19
4.6.1
4.6.10
4.63.9
4.56.9
4.7.9
4.5.9
4.10.9
4.1.9
42.6.9
24.6.9
5.6.9
3.6.9
1.6.9
10.6.9";
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