C# code to extract Email from text

ExtractEmail.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace Coderbuddy
{
  public class ExtractEmail
  {
    public List<string> ExtractEmails(string textToScrape)
    {
      Regex reg = new Regex(@"[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}", RegexOptions.IgnoreCase);
      Match match;
      
      List<string> results = new List<string>();
      for (match = reg.Match(textToScrape); match.Success; match = match.NextMatch())
      {
        if (!(results.Contains(match.Value)))
          results.Add(match.Value);
      }
      
      return results;
    }
  }
}

if you use an email line name.lastname@domain.com.ar it does not work.

@mbonafede Replace line number 12 in the gist with the following code and it will work for you

Regex reg = new Regex(@"[a-zA-Z0-9._%+-]+@[a-zA-Z]+(\.[a-zA-Z0-9]+)+", RegexOptions.IgnoreCase)

Please note this code is a bit dated, with ICANN now allowing multiple different TLD's including unicode based one's, this code may not work for all the domains out there.