使用gmail发送电子邮件时未指定smtp主机?

大家好，

我正在尝试使用gmail发送电子邮件.我正在指定主机和所有东西，但这给了我这个错误:未指定smtp主机.

这是我的代码:

Hi all ,

I am trying to send email using gmail.I am specifying the host and every thing but it is giving me this error : The smtp host is not specified.

Here is my code :

Dim smtp As New SmtpClient("smtp.gmail.com", 587)


          smtp.DeliveryMethod = SmtpDeliveryMethod.Network
          smtp.EnableSsl = True

          smtp.UseDefaultCredentials = False
          Dim SMTPUserInfo As New System.Net.NetworkCredential("myemail", "pass")
          smtp.Credentials = SMTPUserInfo

          e.Message.From = New MailAddress("myemail@gmail.com")
          e.Message.IsBodyHtml = True
          e.Message.Subject = "Allo Magazine : Registration Confirmation Email"
          e.Message.Body = e.Message.Body.Replace("<%AC%>", userId.ToString())
          smtp.Send(e.Message)

所以请任何人告诉我这是什么错误?

提前谢谢.

So please can anyone tell me what is the error ?

Thanks in advance.

<maildefinition priority="High" from="ahmad.hjaj@gmail.com" bodyfilename="~/ConfirmationEmailHTML/ConfirmationEmail.htm">
                  </maildefinition>