Sending an HTML Mail Message with the Script Task

發行項
12/15/2008

新增： 2006 年 4 月 14 日

The Integration Services SendMail task only supports mail messages in plain text format. However you can easily send HTML mail messages by using the Script task and the mail capabilities of the .NET Framework.

附註：
If you want to create a task that you can more easily reuse across multiple packages, consider using the code in this Script task sample as the starting point for a custom task. For more information, see Developing a Custom Task.

Description

The following example uses the System.Net.Mail namespace to configure and send an HTML mail message. The script obtains the To, From, Subject, and body of the e-mail from package variables, uses them to create a new MailMessage, and sets its IsBodyHtml property to True. Then it obtains the SMTP server name from another package variable, initializes an instance of System.Net.Mail.SmtpClient, and calls its Send method to send the HTML message. The sample encapsulates the message sending functionality in a subroutine that could be reused in other scripts.

To configure this Script Task example without an SMTP Connection Manager

Create string variables named HtmlEmailTo, HtmlEmailFrom, and HtmlEmailSubject and assign appropriate values to them for a valid test message.
Create a string variable named HtmlEmailBody and assign a string of HTML markup to it. For example:
```
<html><body><h1>Testing</h1><p>This is a <b>test</b> message.</p></body></html>
```
Create a string variable named HtmlEmailServer and assign the name of an available SMTP server that accepts anonymous outgoing messages.
Assign all five of these variables to the ReadOnlyVariables property of a new Script task.
Import the System.Net and System.Net.Mail namespaces into your code.

The sample code in this topic obtains the SMTP server name from a package variable. However, you could also take advantage of an SMTP connection manager to encapsulate the connection information, and extract the server name from the connection manager in your code. The AcquireConnection method of the SMTP connection manager returns a string in the following format:

SmtpServer=smtphost;UseWindowsAuthentication=False;EnableSsl=False;

You can use the String.Split method to separate this argument list into an array of individual strings at each semicolon (;) or equal sign (=), and then extract the second argument (subscript 1) from the array as the server name.

To configure this Script Task example with an SMTP Connection Manager

Modify the Script task configured earlier by removing the HtmlEmailServer variable from the list of ReadOnlyVariables.

Replace the line of code that obtains the server name:

    Dim smtpServer As String = _
      Dts.Variables("HtmlEmailServer").Value.ToString

with the following lines:

    Dim smtpConnectionString As String = _
      DirectCast(Dts.Connections("SMTP Connection Manager").AcquireConnection(Dts.Transaction), String)
    Dim smtpServer As String = _
      smtpConnectionString.Split(New Char() {"="c, ";"c})(1)

Code

  Public Sub Main()

    Dim htmlMessageTo As String = _
      Dts.Variables("HtmlEmailTo").Value.ToString
    Dim htmlMessageFrom As String = _
      Dts.Variables("HtmlEmailFrom").Value.ToString
    Dim htmlMessageSubject As String = _
      Dts.Variables("HtmlEmailSubject").Value.ToString
    Dim htmlMessageBody As String = _
      Dts.Variables("HtmlEmailBody").Value.ToString
    Dim smtpServer As String = _
      Dts.Variables("HtmlEmailServer").Value.ToString

    SendMailMessage( _
        htmlMessageTo, htmlMessageFrom, _
        htmlMessageSubject, htmlMessageBody, _
        True, smtpServer)

    Dts.TaskResult = Dts.Results.Success

  End Sub

  Private Sub SendMailMessage( _
      ByVal SendTo As String, ByVal From As String, _
      ByVal Subject As String, ByVal Body As String, _
      ByVal IsBodyHtml As Boolean, ByVal Server As String)

    Dim htmlMessage As MailMessage
    Dim mySmtpClient As SmtpClient

    htmlMessage = New MailMessage( _
      SendTo, From, Subject, Body)
    htmlMessage.IsBodyHtml = IsBodyHtml

    mySmtpClient = New SmtpClient(Server)
    mySmtpClient.Credentials = CredentialCache.DefaultNetworkCredentials
    mySmtpClient.Send(htmlMessage)

  End Sub

共用方式為