Validate email address

/// <summary>
///    This method accepts a email and validates this using REGEX
/// </summary>
/// <returns>
///    true or false based on Regex match
/// </returns>
static server boolean isValidEmail(Email _email)
{
	System.Text.RegularExpressions.Match match;
	System.Boolean netBool;
	boolean xppBool;
	str matchEmailPattern =
	   @"^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@"
	 + @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?
	   [0-9]{1,2}|25[0-5]|2[0-4][0-9])\."
	 + @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?
	   [0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
	 + @"([\w-]+\.)+[a-zA-Z]{2,4})$";
	
	new InteropPermission(InteropKind::ClrInterop).assert();
	match = System.Text.RegularExpressions.Regex::Match(_email, matchEmailPattern);
	netBool = match.get_Success();
	xppBool = netBool;
	CodeAccessPermission::revertAssert();

	return xppBool;
}

/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
[DataEventHandler(tableStr(LogisticsElectronicAddress), DataEventType::ValidatedField)]
public static void LogisticsElectronicAddress_onValidatedField(Common sender, DataEventArgs e)
{
	LogisticsElectronicAddress logisticsElectronicAddress = sender;
	ValidateFieldEventArgs validateFieldEventArgs = e as ValidateFieldEventArgs;
	LogisticsElectronicAddressLocator locator;
	boolean ret = validateFieldEventArgs.parmValidateResult();

	if (ret)
	{
		switch (validateFieldEventArgs.parmFieldId())
		{
			case fieldNum(LogisticsElectronicAddress, Locator):
				
				if (logisticsElectronicAddress.Type == LogisticsElectronicAddressMethodType::Email)
				{
					locator = logisticsElectronicAddress.Locator;

					if (!LogisticsElectronicAddress_SXSExtension::isValidEmail(locator))
					{
						ret = checkFailed("Email address is invalid.");
					}
				}

				break;

			default:
				break;
		}
	}

	validateFieldEventArgs.parmValidateResult(ret);
}