How to delete an image file based on its dimensions with PowerShell-CodePudding

I am trying to delete an image based on the dimensions of said image, but I've run into a problem.

I am trying to delete images whose length or width are less than 490 pixels. However, the code I have tried throws an error for every item. This is the error:

Remove-Item : Cannot remove item (file path): The process cannot access the file
'(file path)' because it is being used by another process.
At line:6 char:9
          Remove-Item $_
          ~~~~~~~~~~~~~~
      CategoryInfo          : WriteError: ((file path):FileInfo) [Remove-Item], IOException
      FullyQualifiedErrorId : RemoveFileSystemItemIOError,Microsoft.PowerShell.Commands.RemoveItemCommand

Here is my code:

[Void][Reflection.Assembly]::LoadWithPartialName("System.Drawing")
$(Get-ChildItem -Filter *.jpg).FullName | ForEach-Object { 
    $img = [Drawing.Image]::FromFile($_); 

    If (($img.Width -lt 490) -or ($img.Height -lt 490)) {
        Remove-Item $_
    }
}

I am not running any apparent processes that would be using the images. When using Handle64, it says that powershell.exe is using the files. Any help would be appreciated!

CodePudding user response：

The $img object is keeping the file in use, so you need to dispose of that before you can delete the file:

Add-Type -AssemblyName System.Drawing

(Get-ChildItem -Filter '*.jpg' -File).FullName | ForEach-Object { 
    $img = [System.Drawing.Image]::FromFile($_)
    $w = $img.Width
    $h = $img.Height
    # get rid of the Image object and release the lock on the file
    $img.Dispose()
    If (($w -lt 490) -or ($h -lt 490)) {
        Remove-Item -Path $_
    }
}