If you are messing with IIS in C# code, you can do quite a bit if you System.DirectoryServices and the DirectoryEntry object. This can be extended if you know the name of the items in a the DirectoryEntry’s property collection. You can get these as follows:

using System;
using System.Collections.Generic;
using System.DirectoryServices;

namespace FindIISLogWithCSharp
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> AvailableProperties = new List<string>();
            DirectoryEntry folderRoot = new DirectoryEntry("IIS://localhost/W3SVC");
            PropertyCollection pc = folderRoot.Properties;
            foreach (PropertyValueCollection p in pc)
            {
                AvailableProperties.Add(p.PropertyName);                
            }
            
            // Sort alphabetically
            AvailableProperties.Sort();                       
            foreach (String prop in AvailableProperties)
            {
                Console.WriteLine(prop);
            }
        }
    }
}

Of course, different DirectoryEntry objects can have different lists. However, this exact one created the following list on a Windows 2008 R2 64-bit Server with IIS installed and configured.

AccessFlags
AccessSSLFlags
AnonymousUserName
ApplicationDependencies
AppPoolId
AspDiskTemplateCacheDirectory
AuthFlags
DefaultDoc
DirBrowseFlags
DontLog
HttpCustomHeaders
HttpErrors
IIs5IsolationModeEnabled
KeyType
LogFileDirectory
LogPluginClsid
NTAuthenticationProviders
RedirectHeaders
ScriptMaps
SSIExecDisable
SslUseDsMapper
TraceUriPrefix
WebSvcExtRestrictionList