c# - RegEx for an IP Address

Question

I try to extract the value (IP Address) of the wan_ip with this sourcecode: Whats wrong?! I′m sure that the RegEx pattern is correct.

String input = @"var product_pic_fn=;var firmware_ver='20.02.024';var wan_ip='92.75.120.206';if (parent.location.href != window.location.href)";
Regex ip = new Regex(@"[d{1,3}.d{1,3}.d{1,3}.d{1,3}");
string[] result = ip.Split(input);

foreach (string bla in result)  
{
  Console.WriteLine(bla);                
}

Console.Read();

Answer 1

The [ shouldn't be at the start of your pattern. Also, you probably want to use Matches(...).

Try:

String input = @"var product_pic_fn=;var firmware_ver='20.02.024';var wan_ip='92.75.120.206';if (parent.location.href != window.location.href)";
Regex ip = new Regex(@"d{1,3}.d{1,3}.d{1,3}.d{1,3}");
MatchCollection result = ip.Matches(input);
Console.WriteLine(result[0]);