/// <summary>
        /// Harvest a web directory.
        /// </summary>
        /// <param name="webDirectoryEntry">The web directory directory entry.</param>
        /// <param name="webSite">The parent web site.</param>
        private void HarvestWebDirectory(DirectoryEntry webDirectoryEntry, IIs.WebSite webSite)
        {
            foreach (DirectoryEntry childEntry in webDirectoryEntry.Children)
            {
                switch (childEntry.SchemaClassName)
                {
                case "IIsWebDirectory":
                    this.HarvestWebDirectory(childEntry, webSite);
                    break;

                case "IIsWebVirtualDir":
                    this.HarvestWebVirtualDir(childEntry, webSite);
                    break;
                }
            }

            IIs.WebDirProperties webDirProperties = this.HarvestWebDirProperties(webDirectoryEntry);

            if (null != webDirProperties)
            {
                IIs.WebDir webDir = new IIs.WebDir();

                int indexOfRoot = webDirectoryEntry.Path.IndexOf("ROOT/", StringComparison.OrdinalIgnoreCase);
                webDir.Path = webDirectoryEntry.Path.Substring(indexOfRoot + 5);

                webDir.AddChild(webDirProperties);

                webSite.AddChild(webDir);
            }
        }
        /// <summary>
        /// Harvest a web virtual directory.
        /// </summary>
        /// <param name="webVirtualDirEntry">The web virtual directory directory entry.</param>
        /// <param name="webSite">The parent web site.</param>
        private void HarvestWebVirtualDir(DirectoryEntry webVirtualDirEntry, IIs.WebSite webSite)
        {
            IIs.WebVirtualDir webVirtualDir = new IIs.WebVirtualDir();

            foreach (string propertyName in webVirtualDirEntry.Properties.PropertyNames)
            {
                PropertyValueCollection property       = webVirtualDirEntry.Properties[propertyName];
                PropertyValueCollection parentProperty = webVirtualDirEntry.Parent.Properties[propertyName];

                if (null == parentProperty.Value || parentProperty.Value.ToString() != property.Value.ToString())
                {
                    switch (propertyName)
                    {
                    case "Path":
                        webVirtualDir.Directory = (string)property.Value;
                        break;
                    }
                }
            }

            int indexOfRoot = webVirtualDirEntry.Path.IndexOf("ROOT/", StringComparison.OrdinalIgnoreCase);

            webVirtualDir.Alias = webVirtualDirEntry.Path.Substring(indexOfRoot + 5);

            IIs.WebDirProperties webDirProps = this.HarvestWebDirProperties(webVirtualDirEntry);
            if (webDirProps != null)
            {
                webVirtualDir.AddChild(webDirProps);
            }

            foreach (DirectoryEntry childEntry in webVirtualDirEntry.Children)
            {
                switch (childEntry.SchemaClassName)
                {
                case "IIsWebDirectory":
                    this.HarvestWebDirectory(childEntry, webSite);
                    break;

                case "IIsWebVirtualDir":
                    this.HarvestWebVirtualDir(childEntry, webSite);
                    break;
                }
            }

            webSite.AddChild(webVirtualDir);
        }
        /// <summary>
        /// Harvest a web site.
        /// </summary>
        /// <param name="webSiteEntry">The web site directory entry.</param>
        /// <returns>The harvested web site.</returns>
        private IIs.WebSite HarvestWebSite(DirectoryEntry webSiteEntry)
        {
            IIs.WebSite webSite = new IIs.WebSite();

            foreach (string propertyName in webSiteEntry.Properties.PropertyNames)
            {
                PropertyValueCollection property       = webSiteEntry.Properties[propertyName];
                PropertyValueCollection parentProperty = webSiteEntry.Parent.Properties[propertyName];

                if (null == parentProperty.Value || parentProperty.Value.ToString() != property.Value.ToString())
                {
                    switch (propertyName)
                    {
                    case "SecureBindings":
                        IIs.WebAddress secureWebAddress = this.HarvestBindings(propertyName, property);
                        if (null != secureWebAddress)
                        {
                            webSite.AddChild(secureWebAddress);
                        }
                        break;

                    case "ServerBindings":
                        IIs.WebAddress webAddress = this.HarvestBindings(propertyName, property);
                        if (null != webAddress)
                        {
                            webSite.AddChild(webAddress);
                        }
                        break;

                    case "ServerComment":
                        webSite.Description = (string)property.Value;
                        break;
                    }
                }
            }

            foreach (DirectoryEntry childEntry in webSiteEntry.Children)
            {
                switch (childEntry.SchemaClassName)
                {
                case "IIsFilters":
                    string loadOrder = (string)childEntry.Properties["FilterLoadOrder"].Value;
                    if (loadOrder.Length > 0)
                    {
                        string[] filterNames = loadOrder.Split(",".ToCharArray());

                        for (int i = 0; i < filterNames.Length; i++)
                        {
                            using (DirectoryEntry webFilterEntry = new DirectoryEntry(String.Concat(childEntry.Path, '/', filterNames[i])))
                            {
                                IIs.WebFilter webFilter = this.HarvestWebFilter(webFilterEntry);

                                webFilter.LoadOrder = (i + 1).ToString(CultureInfo.InvariantCulture);

                                webSite.AddChild(webFilter);
                            }
                        }
                    }
                    break;

                case "IIsWebDirectory":
                    this.HarvestWebDirectory(childEntry, webSite);
                    break;

                case "IIsWebVirtualDir":
                    foreach (string propertyName in childEntry.Properties.PropertyNames)
                    {
                        PropertyValueCollection property = childEntry.Properties[propertyName];

                        switch (propertyName)
                        {
                        case "Path":
                            webSite.Directory = (string)property.Value;
                            break;
                        }
                    }

                    IIs.WebDirProperties webDirProps = this.HarvestWebDirProperties(childEntry);
                    if (null != webDirProps)
                    {
                        webSite.AddChild(webDirProps);
                    }

                    foreach (DirectoryEntry child2Entry in childEntry.Children)
                    {
                        switch (child2Entry.SchemaClassName)
                        {
                        case "IIsWebDirectory":
                            this.HarvestWebDirectory(child2Entry, webSite);
                            break;

                        case "IIsWebVirtualDir":
                            this.HarvestWebVirtualDir(child2Entry, webSite);
                            break;
                        }
                    }
                    break;
                }
            }

            return(webSite);
        }
        /// <summary>
        /// Harvest a web directory's properties.
        /// </summary>
        /// <param name="directoryEntry">The web directory directory entry.</param>
        /// <returns>The harvested web directory's properties.</returns>
        private IIs.WebDirProperties HarvestWebDirProperties(DirectoryEntry directoryEntry)
        {
            bool foundProperties = false;

            IIs.WebDirProperties webDirProperties = new IIs.WebDirProperties();

            // Cannot read properties for "iisadmin" site.
            if (String.Equals("iisadmin", directoryEntry.Name, StringComparison.OrdinalIgnoreCase) &&
                String.Equals("ROOT", directoryEntry.Parent.Name, StringComparison.OrdinalIgnoreCase))
            {
                return(null);
            }

            foreach (string propertyName in directoryEntry.Properties.PropertyNames)
            {
                PropertyValueCollection property       = directoryEntry.Properties[propertyName];
                PropertyValueCollection parentProperty = directoryEntry.Parent.Properties[propertyName];

                if (null == parentProperty.Value || parentProperty.Value.ToString() != property.Value.ToString())
                {
                    switch (propertyName)
                    {
                    case "AccessFlags":
                        int access = (int)property.Value;

                        if (0x1 == (access & 0x1))
                        {
                            webDirProperties.Read = IIs.YesNoType.yes;
                        }

                        if (0x2 == (access & 0x2))
                        {
                            webDirProperties.Write = IIs.YesNoType.yes;
                        }

                        if (0x4 == (access & 0x4))
                        {
                            webDirProperties.Execute = IIs.YesNoType.yes;
                        }

                        if (0x200 == (access & 0x200))
                        {
                            webDirProperties.Script = IIs.YesNoType.yes;
                        }

                        foundProperties = true;
                        break;

                    case "AuthFlags":
                        int authorization = (int)property.Value;

                        if (0x1 == (authorization & 0x1))
                        {
                            webDirProperties.AnonymousAccess = IIs.YesNoType.yes;
                        }

                        if (0x2 == (authorization & 0x2))
                        {
                            webDirProperties.BasicAuthentication = IIs.YesNoType.yes;
                        }

                        if (0x4 == (authorization & 0x4))
                        {
                            webDirProperties.WindowsAuthentication = IIs.YesNoType.yes;
                        }

                        if (0x10 == (authorization & 0x10))
                        {
                            webDirProperties.DigestAuthentication = IIs.YesNoType.yes;
                        }

                        if (0x40 == (authorization & 0x40))
                        {
                            webDirProperties.PassportAuthentication = IIs.YesNoType.yes;
                        }

                        foundProperties = true;
                        break;
                    }
                }
            }

            return(foundProperties ? webDirProperties : null);
        }