using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(192\.168\.(1|2|10|11|12|20|21|22)\..+)|(10\.0\.0\.99)|(172\.0\.0\.45)|(172\.0\.0\.46)|(10\.10\.10\.50)|(10\.10\.10\.52)";
string input = @"192.168.189.999
192.168.22.3
192.168.10.10
192.168.1.1
10.0.0.99
10.10.10.50
10.10.10.51
10.10.10.52
10.10.10.53
";
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