问题描述

我正在构建一个应用程序，该应用程序需要在发送电子邮件时以动态/编程方式了解并使用不同的 SMTP 设置.

I am building an app that needs to dynamically/programatically know of and use different SMTP settings when sending email.

我习惯于使用 system.net/mailSettings 方法，但据我了解，它一次只允许一个 SMTP 连接定义，由 SmtpClient() 使用.

I'm used to using the system.net/mailSettings approach, but as I understand it, that only allows one SMTP connection definition at a time, used by SmtpClient().

但是，我需要更多类似 connectionStrings 的方法，我可以在其中根据键/名称提取一组设置.

However, I need more of a connectionStrings-like approach, where I can pull a set of settings based on a key/name.

有什么建议吗?我愿意跳过传统的 SmtpClient/mailSettings 方法，我认为必须...

Any recommendations? I'm open to skipping the tradintional SmtpClient/mailSettings approach, and I think will have to...

推荐答案

我需要在 web.config 中有不同的 smtp 配置，具体取决于环境:dev、staging 和 production.

I needed to have different smtp configurations in the web.config depending on the environment: dev, staging and production.

这是我最终使用的:

在 web.config 中:

In web.config:

<configuration>
  <configSections>
    <sectionGroup name="mailSettings">
      <section name="smtp_1" type="System.Net.Configuration.SmtpSection"/>
      <section name="smtp_2" type="System.Net.Configuration.SmtpSection"/>
      <section name="smtp_3" type="System.Net.Configuration.SmtpSection"/>
    </sectionGroup>
  </configSections>
  <mailSettings>
    <smtp_1 deliveryMethod="Network" from="mail1@temp.uri">
      <network host="..." defaultCredentials="false"/>
    </smtp_1>
    <smtp_2 deliveryMethod="Network" from="mail2@temp.uri">
      <network host="1..." defaultCredentials="false"/>
    </smtp_2>
    <smtp_3 deliveryMethod="Network" from="mail3@temp.uri">
      <network host="..." defaultCredentials="false"/>
    </smtp_3>
  </mailSettings>
</configuration>

然后在代码中:

return (SmtpSection)ConfigurationManager.GetSection("mailSettings/smtp_1");
return (SmtpSection)ConfigurationManager.GetSection("mailSettings/smtp_2");
return (SmtpSection)ConfigurationManager.GetSection("mailSettings/smtp_3");

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