منبع:http://msdn.microsoft.com/en-us/library/01escwtf.aspx
using System;
using System.Globalization;
using System.Text.RegularExpressions;
public class RegexUtilities
{
bool invalid = false;
public bool IsValidEmail(string strIn)
{
invalid = false;
if (String.IsNullOrEmpty(strIn))
return false;
// Use IdnMapping class to convert Unicode domain names.
try {
strIn = Regex.Replace(strIn, @"(@)(.+)$", this.DomainMapper,
RegexOptions.None, TimeSpan.FromMilliseconds(200));
}
catch (RegexMatchTimeoutException) {
return false;
}
if (invalid)
return false;
// Return true if strIn is in valid e-mail format.
try {
return Regex.IsMatch(strIn,
@"^(?("")(""[^""]+?""@)|(([0-9a-z]((\.(?!\.))|[-!#\$%&'\*\+/=\?\^`\{\}\|~\w])*)(?<=[0-9a-z])@))" +
@"(?(\[)(\[(\d{1,3}\.){3}\d{1,3}\])|(([0-9a-z][-\w]*[0-9a-z]*\.)+[a-z0-9]{2,17}))$",
RegexOptions.IgnoreCase, TimeSpan.FromMilliseconds(250));
}
catch (RegexMatchTimeoutException) {
return false;
}
}
private string DomainMapper(Match match)
{
// IdnMapping class with default property values.
IdnMapping idn = new IdnMapping();
string domainName = match.Groups[2].Value;
try {
domainName = idn.GetAscii(domainName);
}
catch (ArgumentException) {
invalid = true;
}
return match.Groups[1].Value + domainName;
}
}
public class Application
{
public static void Main()
{
RegexUtilities util = new RegexUtilities();
string[] emailAddresses = { "david.jones@proseware.com", "d.j@server1.proseware.com",
"jones@ms1.proseware.com", "j.@server1.proseware.com",
"j@proseware.com9", "js#internal@proseware.com",
"j_9@[129.126.118.1]", "j..s@proseware.com",
"js*@proseware.com", "js@proseware..com",
"js@proseware.com9", "js@proseware.com9", "j.s@server1.proseware.com" };
foreach (var emailAddress in emailAddresses) {
if (util.IsValidEmail(emailAddress))
Console.WriteLine("Valid: {0}", emailAddress);
else
Console.WriteLine("Invalid: {0}", emailAddress);
}
}
}
// The example displays the following output:
// Valid: david.jones@proseware.com
// Valid: d.j@server1.proseware.com
// Valid: jones@ms1.proseware.com
// Invalid: j.@server1.proseware.com
// Invalid: j@proseware.com9
// Valid: js#internal@proseware.com
// Valid: j_9@[129.126.118.1]
// Invalid: j..s@proseware.com
// Invalid: js*@proseware.com
// Invalid: js@proseware..com
// Invalid: js@proseware.com9
// Valid: j.s@server1.proseware.com
پاسخ با نقل قول
نوشته شده توسط Mahmoud.Afrad
