Question

Searching StackOverflow, I found this question on how to Retrieve SMTP settings from Web.Config, but no details on how to update the SMTP back to the web.config file.

I started with the following code:

Configuration webConfig = WebConfigurationManager.OpenWebConfiguration("~");
MailSettingsSectionGroup settings =
  (MailSettingsSectionGroup)webConfig.GetSectionGroup("system.net/mailSettings");
SmtpSection smtp = settings.Smtp;
SmtpNetworkElement net = smtp.Network;

but was quickly clued in by Intellisense that SmptSection.Network is a Get (aka “read-only”) accessor.

So how am I supposed to programmatically write my SMTP data back to web.config?

Answer 1

You should be able to do something like this, does this work?:

Configuration webConfig = WebConfigurationManager.OpenWebConfiguration("~");
MailSettingsSectionGroup settings =
    (MailSettingsSectionGroup)webConfig.GetSectionGroup("system.net/mailSettings");
SmtpSection smtp = settings.Smtp;
SmtpNetworkElement net = smtp.Network;
net.Port = 25;
net.Host = "localhost";
webConfig.Save();