private void GetFiles(DirectoryInfo dir, ProjectFolderNode nodeToAddTo, FitProj p)
        {
            foreach (var fileinfo in dir.GetFiles())
            {
                if (fileinfo.Name.EndsWith(".fitproj", StringComparison.InvariantCultureIgnoreCase))
                {
                    break;
                }

                var child = new ProjectFileNode()
                {
                    Text = fileinfo.Name
                };
                child.Tag = fileinfo;
                foreach (var f in p.IncludedFiles)
                {
                    if (fileinfo.FullName.Contains(f.RelativePath))
                    {
                        nodeToAddTo.Nodes.Add(child);
                        break;
                    }
                }
            }
        }
        private void GetDirectories(DirectoryInfo[] subDirs, ProjectFolderNode nodeToAddTo, FitProj p)
        {
            ProjectFolderNode aNode;

            DirectoryInfo[] subSubDirs;
            foreach (DirectoryInfo subDir in subDirs)
            {
                aNode = new ProjectFolderNode()
                {
                    Text = subDir.Name
                };
                aNode.Tag  = subDir;
                subSubDirs = subDir.GetDirectories();
                if (subSubDirs.Length != 0)
                {
                    GetDirectories(subSubDirs, aNode, p);
                }
                GetFiles(subDir, aNode, p);
                nodeToAddTo.Nodes.Add(aNode);
            }
        }