using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(.*nameservers.*$\n.*addresses:).*$";
string input = @"network:
ethernets:
enp0s3:
addresses: [10.10.10.5/24]
gateway4: 10.10.10.1
dhcp4: no
nameservers:
addresses: [1.1.1.1, 2.2.2.2]
version: 2
";
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