vb.net 从 ASP.Net 发送电子邮件时必须指定收件人错误
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A recipient must be specified error when sending email from ASP.Net
提问by Emad-ud-deen
We are trying to send the out the output of a html string to a particular test email address and found this error at runtime:
我们试图将 html 字符串的输出发送到特定的测试电子邮件地址，并在运行时发现此错误：
A recipient must be specified.
Here is the coding from the code-behind file.
这是来自代码隐藏文件的编码。
Protected Sub EmailTheList()
' Get the rendered HTML.
'-----------------------
Dim SB As New StringBuilder()
Dim SW As New StringWriter(SB)
Dim htmlTW As New HtmlTextWriter(SW)
GridViewSummary.RenderControl(htmlTW)
' Get the HTML into a string.
' This will be used in the body of the email report.
'---------------------------------------------------
Dim dataGridHTML As String = SB.ToString()
Dim SmtpServer As New SmtpClient()
SmtpServer.Credentials = New Net.NetworkCredential("[email protected]", "myPassword")
SmtpServer.Port = 587
SmtpServer.Host = "smtp.gmail.com"
SmtpServer.EnableSsl = True
ObjMailMessage = New MailMessage()
Try
ObjMailMessage.From = New MailAddress("[email protected]", "Some text is here.", System.Text.Encoding.UTF8)
ObjMailMessage.Subject = "Test message from Emad"
ObjMailMessage.ReplyToList.Add("[email protected]")
ObjMailMessage.Body = dataGridHTML
ObjMailMessage.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure
SmtpServer.Send(ObjMailMessage)
Catch ex As Exception
MsgBox(ex.ToString())
End Try
End Sub
We suspect we are not using the correct syntax for this line:
我们怀疑我们没有为此行使用正确的语法：
ObjMailMessage.From = ObjMailMessage.ReplyToList.Add("[email protected]")
回答by Dave Swersky
You're missing the To: address, which is causing the error regarding a recipient.
您缺少收件人：地址，这会导致有关收件人的错误。
ObjMailMessage.To.Add(New MailAddress("[email protected]", "An error happened", System.Text.Encoding.UTF8))
Reference: http://msdn.microsoft.com/en-us/library/system.net.mail.mailmessage.aspx
参考：http: //msdn.microsoft.com/en-us/library/system.net.mail.mailmessage.aspx
