Regex.Match searches within a larger string.
The object that it returns has properties for the Index and Length of the match, as well as the actual Value matched:
using System;
using System.Text.RegularExpressions;
class Program
{
static void Main(string[] args)
{
Match m = Regex.Match("abcd", @"abcd?e");
Console.WriteLine(m.Success);
Console.WriteLine(m.Index);
Console.WriteLine(m.Length);
Console.WriteLine(m.Value);
Console.WriteLine(m.ToString());
}
}
The output:
False
0
0