c# 获取用户桌面选择的文件

 Shell32.ShellFolderView desktopFolderView;
 int hwnd;
 Shell32.Shell iShell = new Shell32.Shell();
 SHDocVw.ShellWindows iWindows = iShell.Windows();
 SHDocVw.InternetExplorer iDesktop = iWindows.FindWindowSW(0, null, 8, out hwnd, 1);
 desktopFolderView = (Shell32.ShellFolderView)iDesktop.Document;
 List<string> list = new List<string>();

 Shell32.FolderItems selItems = desktopFolderView.SelectedItems();
 foreach (Shell32.FolderItem fitem in selItems)
 {

     // if (fitem.IsFileSystem)
     //  listBox1.Items.Add(fitem.Path);

     list.Add(fitem.Name);
 }
 Title =""+ list.Count +"="+ list[0];

            string filename;
            string ok = "";
            ArrayList selected = new ArrayList();
            foreach (SHDocVw.InternetExplorer window in new SHDocVw.ShellWindows())
            {
                Debug.Print(window.LocationURL);
                filename = Path.GetFileNameWithoutExtension(window.FullName).ToLower();

                if (filename.ToLowerInvariant().Contains("desk"))
                {
                    Debug.Print(window.LocationURL);
                }
                 if (filename.ToLowerInvariant() == "explorer" || filename.ToLowerInvariant() == "资源管理器")
                {
                    Shell32.FolderItems items = ((Shell32.IShellFolderViewDual2)window.Document).SelectedItems();
                    var count = items.Count;
                    foreach (Shell32.FolderItem item in items)
                    {
                        //selected.Add(item.Path);
                        //MessageBox.Show(item.Path);

                        ok= item.Path;   

                    }
                }
            }