With a regular expression, the group will contain it ([^"]*):
title="([^"]*)"
C#
using System.Text.RegularExpressions;
static void Main(string[] args)
{
string originalString = "The Link.";
Regex rgx = new Regex("title=\"([^\"]*)\"", RegexOptions.IgnoreCase);
Match match = rgx.Matches(originalString)[0];
Console.WriteLine(match.Groups[1]);
Console.ReadLine();
}