Using Powershell to loop through Excel files and check if Spreadsheet name exists - excel

Question

I'm trying to write a powershell script that will loop through each excel file in the given directory, check the file for a specifically named worksheet, and then copy that file to another location if it's a match.
Please see below for what I've already tried:
[void][reflection.assembly]::Loadwithpartialname("microsoft.office.excel")
$Excel = New-Object -ComObject Excel.Application
$tempLocation = "C:\Test\" # Path to read files
$files = Get-ChildItem C:\Test
ForEach ($file in $files)
{
#Check for Worksheet named TestSheet
$WorkBook = $Excel.Workbooks.Open($file)
$WorkSheets = $WorkBook.WorkSheets
foreach ($WorkSheet in $Workbook.Worksheets) {
If ($WorkSheet.Name -eq "TestSheet")
{$path = $tempLocation + "\" + $file
Write "Saving $path"
Copy-Item c:\Test\$file c:\Confirmed}
Else {Write "$path does not contain TestSheet"}
$WorkBook.Close()
}
}
This script returns no errors in PowerShell, but just sits there without writing anything or copying any files. Any ideas?
EDIT: Here's my final script that is now running successfully
$ErrorActionPreference= 'silentlycontinue'
$tempLocation = "C:\Source" # Path to read files
$targetlocation = "C:\Target"
Write "Loading Files..."
$files = Get-ChildItem C:\Source
Write "Files Loaded."
ForEach ($file in $files)
{
#Check for Worksheet named TestSheet
$Excel = New-Object -ComObject Excel.Application
$Excel.visible = $false
$Excel.DisplayAlerts = $false
$WorkBook = $Excel.Workbooks.Open($file.Fullname)
$WorkSheets = $WorkBook.WorkSheets | where {$_.name -eq "TestSheet"}
if($WorkSheets) {
$path = $tempLocation + "\" + $file
$dest = $targetlocation + "\" + $file
Write "Saving $path"
$WorkBook.SaveAs($dest)
}
$Excel.Quit()
Stop-Process -processname EXCEL
}
Read-host -prompt "The Scan has completed. Press ENTER to close..."
clear-host;

Answer 1

There were several issues with my script's logic. The following script ran successfully! It took hours of research...
$ErrorActionPreference= 'silentlycontinue'
$tempLocation = "C:\Source" # Path to read files
$targetlocation = "C:\Target"
Write "Loading Files..."
$files = Get-ChildItem C:\Source
Write "Files Loaded."
ForEach ($file in $files)
{
#Check for Worksheet named TestSheet
$Excel = New-Object -ComObject Excel.Application
$Excel.visible = $false
$Excel.DisplayAlerts = $false
$WorkBook = $Excel.Workbooks.Open($file.Fullname)
$WorkSheets = $WorkBook.WorkSheets | where {$_.name -eq "TestSheet"}
if($WorkSheets) {
$path = $tempLocation + "\" + $file
$dest = $targetlocation + "\" + $file
Write "Saving $path"
$WorkBook.SaveAs($dest)
}
$Excel.Quit()
Stop-Process -processname EXCEL
}
Read-host -prompt "The Scan has completed. Press ENTER to close..."
clear-host;

Answer 2

You don't need this line:
[void][reflection.assembly]::Loadwithpartialname("microsoft.office.excel")
($Excel = New-Object -ComObject Excel.Application is sufficient here)
I don't think you're referencing the full path to your Excel files. Try modifying this line:
$WorkBook = $Excel.Workbooks.Open($file)
Amend to:
$WorkBook = $Excel.Workbooks.Open($file.Fullname)
Additionally, consider adding a filter to your Get-ChildItem command, if there are sub-directories or non-Excel files, they will cause errors:
$files = Get-ChildItem C:\Test -filter "*.xls"