.NET 中的 MailMessage：为什么 <br/> 标签会按字面意思插入到我的电子邮件中？

Question

我有这个邮件发送功能：

''' <summary>
''' Sends an email.
''' </summary>
''' <param name="from">Who is the email coming from?</param>
''' <param name="to">Who is the email going to?</param>
''' <param name="subject">Subject of the email.</param>
''' <param name="body">Body text of the email.</param>
''' <returns>true if an email was sent, false if sending failed.</returns>
Public Shared Function SendEmail(ByVal from As String, ByVal [to] As String, ByVal subject As String, ByVal body As String) As Boolean
    ' sanity check - can't send to nobody!
    If String.IsNullOrWhiteSpace([to])
        Return False
    End If

    ' get http objects
    Dim http = HttpContext.Current
    Dim Request = http.Request
    Dim Session = http.Session
    Dim Response = http.Response

    ' find SMTP server
    Dim smtpServer As String
    If Request.ServerVariables("SERVER_NAME") = OverridableServerName Then
        smtpServer = LocalServerName
    Else
        smtpServer = Request.ServerVariables("SERVER_NAME")
    End If

    ' compose email
    Try
        Dim message As New MailMessage(from, [to], subject, body.Replace(vbCrLf, "<br/>"))
        message.IsBodyHtml = True
        Dim emailClient As New SmtpClient(smtpServer)
        emailClient.Send(message)
        Return True
    Catch ex As Exception
        Dim uri = New Uri(Request.Url.PathAndQuery, UriKind.Relative).ToString()
        ' trim off the query string
        If (uri.IndexOf("?") >= 0)
            uri = uri.Substring(0, uri.IndexOf("?"))
        End If
        Response.Redirect("ErrorPage.asp?ErrorMsg=From " & uri & "<br><br>" & smtpServer & "<br>" & from & "<br>" & [to] & "<br>" & subject & "<br>" & Replace(body, vbCrLf, "<br>") & "<br>" & Replace(ex.Message, vbCrLf, "<br>"))
        Return False
    End Try
End Function

问题是，即使我将 IsBodyHtml 标志设置为 true，我要替换换行符的 <br/> 标记也会按字面意思呈现，而不是作为生成的电子邮件中的换行符。有一个更好的方法吗？我不应该用 <br/> 标签替换换行符吗？（我会测试它，但我没有本地电子邮件服务器，这就是为什么我要问在这里做什么，所以我不必为了看到结果而不断地将它扔过栅栏进入测试区域电子邮件...)

Answer 1

message.IsBodyHtml = True 确实修复了它，尽管我认为它没有；当我们认为系统未修复时，我们只是在测试错误的系统。糟糕！

.NET 中的 MailMessage：为什么 <br/> 标签会按字面意思插入到我的电子邮件中？

MailMessage in .NET: why are the <br/> tags being inserted literally into my emails?

asp.net

vb.net

mailmessage