PowerShell v2 Function GetNumberOfPages

This is a quick and dirty function I wrote to do analysis on image files. It simply returns the page count within a Bitmap object, or, -1 ($false) if an error occurs. More work to do on it, but, useful for now.

function GetNumberOfPages

{

     [CmdletBinding()]

     param(

          [Parameter(

              Mandatory = $true,

              ValueFromPipeline = $true,

              ValueFromPipelineByPropertyName = $true

          )]

          [ValidateNotNullOrEmpty()]

          [String]

          $TiffImage

     )

    

     if(([appdomain]::currentdomain.getassemblies() | Where {$_ -match "System.Drawing"}) -eq $null)

     {

          Write-Verbose "Loading System.Drawing assembly.";

          [Void] [System.Reflection.Assembly]::LoadFromPartialName("System.Drawing");

     }

    

     if($file = [System.Drawing.Bitmap]::FromFile($TiffImage))

     {

          return $file.GetFrameCount([System.Drawing.Imaging.FrameDimension]::Page)

     }

     else

     {

          return -1

     }

}

In usage, I go down this road:

 PSC:somedirectory> Get-ChildItem ‘.Images**** | ForEach-Object {"$($_.Name): $(GetNumberOfPages $_.fullname)"}

Which returns as simple list:

test.jpg: 1
1.tif: 14
2.tif: 3

Simple, but, free. I know it needs a lot of expansion, but, for 10 minutes of Googling and coding I am happy with it. Back to work.