/// <summary>
/// Verifies an email address is correctly formatted with valid tlds
/// </summary>
/// <param name="text">email to test</param>
/// <returns>True if the format is valid</returns>
public static bool ValidEmailTlds(String text)
{
if (IsEmpty(text))
{
return(false);
}
Regex re = new Regex(@"^[A-Za-z0-9][\w\.\-]+@[A-Za-z0-9.-]+\.[A-Z_a-z]{2,}$");
Match m = re.Match(text.ToLower());
if (m.Success)
{
int dotPos = text.LastIndexOf(".");
String exten = text.Substring(dotPos + 1, text.Length - dotPos - 1);
exten = exten.ToLower();
if (!("|com|info|net|tv|ws|edu|org|gov|mil|us|ca|cc|cn|biz|".IndexOf("|" + exten + "|") > -1))
{
return(DomainUtil.Instance().TLDList.Contains(exten));
}
else
{
return(true);
}
}
else
{
return(false);
}
}
// singleton method
public static DomainUtil Instance()
{
lock (typeof(DomainUtil))
{
if (instance == null)
{
instance = new DomainUtil();
}
return(instance);
}
}
