SmtpException Klas

Definitie

public ref class SmtpException : Exception

[System.Serializable]
public class SmtpException : Exception

public class SmtpException : Exception

[<System.Serializable>]
type SmtpException = class
    inherit Exception
    interface ISerializable

type SmtpException = class
    inherit Exception
    interface ISerializable

Public Class SmtpException
Inherits Exception

Overname

Object

Exception

SmtpException

Afgeleid

System.Net.Mail.SmtpFailedRecipientException

Kenmerken

SerializableAttribute

Implementeringen

ISerializable

Voorbeelden

In het volgende codevoorbeeld wordt een foutbericht weergegeven wanneer de SmtpException uitzondering wordt gegenereerd.

public static void RetryIfBusy(string server)
{
    MailAddress from = new MailAddress("ben@contoso.com");
    MailAddress to = new MailAddress("jane@contoso.com");
    MailMessage message = new MailMessage(from, to);
    // message.Subject = "Using the SmtpClient class.";
    message.Subject = "Using the SmtpClient class.";
    message.Body = @"Using this feature, you can send an email message from an application very easily.";
    // Add a carbon copy recipient.
    MailAddress copy = new MailAddress("Notifications@contoso.com");
    message.CC.Add(copy);
    SmtpClient client = new SmtpClient(server);
    // Include credentials if the server requires them.
    client.Credentials = (ICredentialsByHost)CredentialCache.DefaultNetworkCredentials;
    Console.WriteLine("Sending an email message to {0} using the SMTP host {1}.",
         to.Address, client.Host);
    try
    {
        client.Send(message);
    }
    catch (SmtpFailedRecipientsException ex)
    {
        for (int i = 0; i < ex.InnerExceptions.Length; i++)
        {
            SmtpStatusCode status = ex.InnerExceptions[i].StatusCode;
            if (status == SmtpStatusCode.MailboxBusy ||
                status == SmtpStatusCode.MailboxUnavailable)
            {
                Console.WriteLine("Delivery failed - retrying in 5 seconds.");
                System.Threading.Thread.Sleep(5000);
                client.Send(message);
            }
            else
            {
                Console.WriteLine("Failed to deliver message to {0}",
                    ex.InnerExceptions[i].FailedRecipient);
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("Exception caught in RetryIfBusy(): {0}",
                ex.ToString());
    }
}

Opmerkingen

De StatusCode eigenschap bevat de statuscode die wordt geretourneerd door de SMTP-server.