Question

使用以下功能：

Public Sub SendMail(ByVal SendFrom As String, ByVal SendTo As String, ByVal Subject As String, ByVal Body As String)

    Dim client As New SmtpClient
    Dim message As New MailMessage

    message.Body = Body
    message.Subject = Subject
    message.From = New MailAddress(SendFrom)
    message.To.Add(New MailAddress(SendTo))

    client.Port = "25"
    client.Host = "smtp.myserver.com"

    client.Send(message)

End Sub

我用

打电话

Protected Sub btnSubmit_Click(sender As Object, e As System.EventArgs) Handles btnSubmit.Click

    Dim iandamsb As New StringBuilder

    iandamsb.AppendLine("Please make the following changes:")
    iandamsb.AppendLine("")
    iandamsb.AppendLine("Current name:" & txtCurrentName.Text)
    iandamsb.AppendLine("New name:" & txtNewName.Text)
    iandamsb.AppendLine("New username:" & txtNewUsername.Text)
    iandamsb.AppendLine("Applications:" & txtOtherApplications.Text)

    Dim iandambody As String = iandamsb.ToString

    SendMail(txtRequesterEmail.Text, "ayockel@mydomain.com", "Name Change Request - " & txtCurrentName.Text, iandambody)

End Sub

它工作正常，但它发送两封电子邮件而不是一封。任何人都可以弄明白为什么它会发送副本吗？

Answer 1

我冒昧地猜测你有按钮点击事件绑定两次：一次通过标记中的OnClick属性：

<asp:Button OnClick="btnSubmit_Click" runat="server" ... />

然后再通过代码隐藏Handles：

Protected Sub btnSubmit_Click(sender As Object, e As System.EventArgs) 
    Handles btnSubmit.Click

如果是这样的话，我会删除其中一个。我会保留后者，因此您知道btnSubmit_Click事件在编译时已正确连接。

A discussion of this issue

System.Net.Mail - 发送两封电子邮件？

1 个答案: