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I needed to validate customer email addresses. Many articles suggested to use different regEx , but they are not the same and not easy to identify, which is the best. So i decided to use MailAddress, which throw exception if MS implemented validation failed.
It world be good if the class would provide Validate or TryParse method to avoid costly exception.

    /// <summary>
    ///  
    ////    Validating E-mail address    

/// </summary>

public static class MailHelper
    {
        //TODO: use Reflector or find some code to validate address as strict as ParseValue , for now just catch Exception
    public static string ValidateEmailFormat(string email)
    {
        try
        {
            MailAddress from = new MailAddress(email);
        }
        catch (Exception exc)
        {
            string sMsg = exc.Message;
            return sMsg;
        }
        return "";
    }

    }


Also I found a few articles about validating E-mail Against the Mail server. I wish to implement this in a future.
http://www.coveryourasp.com/ValidateEmail.asp -Short and clear explanation of approach, JSCRIPT ASP
http://www.15seconds.com/issue/030203.htm Validating E-mail Against the Mail server VB.Net
http://www.codeproject.com/KB/validation/Valid_Email_Addresses.aspx C#,reference to  Peter  Bromberg’s C# SMTP Mail without SMTP Service or CDO

Posted on Wednesday, June 8, 2011 7:13 AM .Net Framework | Back to top


Comments on this post: Validating an email address

# re: Validating an email address
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good idea if you validate one email. because with a lot of emails, a trycatch is just awful for performance
Left by lg on Jun 08, 2011 7:37 AM

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