ListView 根据 文件路径 或 扩展名 显示系统文件图标

 private void 获取文件button1_click(object sender, eventargs e)

        {
            folderbrowserdialog1.showdialog();
            string path = folderbrowserdialog1.selectedpath;

            listview1.view = view.list;
            listview1.items.clear();

 

            directoryinfo dir = new directoryinfo(path);

 

            #region 递归遍历文件夹
            foreach (directoryinfo dirfolder in dir.getdirectories())
            {

                listview1.smallimagelist = imagelist1;
                listview1.items.add(dirfolder.name, 0);
            }
            #endregion

 

            #region 递归遍历文件;
            foreach (fileinfo dirfile in dir.getfiles())
            {
                // listview1.items.add(dirfile.name, 1);
                if (!imagelist1.images.keys.contains(dirfile.extension))
                {
                    imagelist1.images.add(dirfile.extension,icon.extractassociatedicon(dirfile.fullname));
                }

                listviewitem lvi = new listviewitem();
                lvi.text = dirfile.name;
                lvi.imageindex = imagelist1.images.keys.indexof(dirfile.extension);
                listview1.items.add(lvi);
             }
             #endregion
        }