如果可以使用 7z.exe ，您也许可以执行以下操作：

If you can use 7z.exe, you may be able to do something like this:

& 'C:\Program Files\7-Zip\7z.exe' l <zipfilename> |
  Select-Object -Last 1 |
  Select-String '([0-9]+) files, ([0-9]+) folders' |
  ForEach-Object {
    $fileCount = [Int] $_.Matches[0].Groups[1].Value
    $dirCount = [Int] $_.Matches[0].Groups[2].Value
  }