BlogEngine.Core.Providers.XmlBlogProvider.DeletePackage C# (CSharp) Method

        public override void DeletePackage(string packageId)
        {
            var files = Path.Combine(dataFolder, Constants.InstalledPackageFilesXml);
            var packages = Path.Combine(dataFolder, Constants.InstalledPackagesXml);
            var xmlDoc = new XmlDocument();

            // remove files from packagefiles.xml

            xmlDoc.Load(files);
            var packageNodes = xmlDoc.SelectNodes("InstalledPackageFiles/item");

            if(packageNodes != null && packageNodes.Count > 0)
            {
                for (int i = 0; i < packageNodes.Count; i++)
                {
                    if (packageNodes[i].Attributes != null && packageNodes[i].Attributes["id"] != null)
                    {
                        if (packageId == packageNodes[i].Attributes["id"].InnerText)
                        {
                            if (packageNodes[i].ParentNode != null)
                                packageNodes[i].ParentNode.RemoveChild(packageNodes[i]);
                        }
                    }
                }
            }
            xmlDoc.Save(files);

            // remove packages from packages.xml

            xmlDoc = new XmlDocument();
            xmlDoc.Load(packages);
            var pkg = xmlDoc.SelectSingleNode("//InstalledPackages/item[@id='" + packageId + "']");

            if (pkg != null && pkg.ParentNode != null)
                pkg.ParentNode.RemoveChild(pkg);

            xmlDoc.Save(packages);
        }