Why this odd default output from Configuration.Save()?

I noticed this interesting behavior today while messing around with the configuration system. When I run this minimal program with no preexisting .config file (use ctrl-F5 to avoid the vshost)...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Configuration;

namespace PlayinWithConfigurationClasses
{
    class Program
    {
        static void Main(string[] args)
        {
            Configuration conf = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

            conf.Save(ConfigurationSaveMode.Minimal, true);
        }
    }
}

... I get this saved as the config file:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.web>
        <trust level="Full" />
        <webControls clientScriptsLocation="/aspnet_client/{0}/{1}/" />
    </system.web>
</configuration>

(I have System.Configuration added as a reference in addition to the "standard" ones.)

Why is the system.web configuration section in there? Whenever I see something peculiar like this it's usually the tip of some interesting iceberg. :) Any ideas what's going on? Just a .NET bug?

ansaurus

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Why this odd default output from Configuration.Save()?

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