//新建文件夹
        private void Click_NewFolder(object sender, RoutedEventArgs e)
        {
            File   file = new File();
            string name = "未命名_" + CategoryManage.findCategory();

            file.Name       = name;
            file.Disk_start = -1;
            file.Path       = CategoryManage.CurrentFile.Path + "/" + name;
            file.Date       = DateTime.Now.ToString();
            file.Size       = 0;
            file.Type       = "Folder";
            CategoryManage.listFiles.Add(file);
            CategoryManage.Update();
        }
        //
        public void new_file_click()
        {
            if (CategoryManage.CurrentFile.Type.Equals("Folder"))
            {
                File   file = new File();
                string name = "未命名_" + CategoryManage.findCategory();
                file.Name = name;

                file.Path       = CategoryManage.CurrentFile.Path + "/" + name;
                file.Date       = DateTime.Now.ToString();
                file.Disk_start = -1;
                file.Size       = 0;
                file.Type       = "File";
                CategoryManage.listFiles.Add(file);
                CategoryManage.Update();
            }
            this.DialogResult = true;
        }