Find size of folders in an array using PowerShell - arrays

Question

I have an array of folders, called $FolderArray. It contains about 40 folders. Inside each folder are a bunch of txt files. I want to loop through each folder to get the number of files in each folder, as well as the total size of each folder. I got the number of files in each folder to work, but for the folder size, it ends up outputting the file size of the last file in each folder.
I pulled this out of a larger snippet of my code, so if anything needs more clarification please let me know. I appreciate the help!
$ProcessedLocation = "C:\Users\User.Name\Documents"
$FolderArray = gci -Path $ProcessedLocation | Where-Object {$_.PSIsContainer} | Foreach-Object {$_.Name}
Foreach ($i in $FolderArray)
{
$FolderLocation = $ProcessedLocation + $i
[int]$FilesInFolder = 0
Get-ChildItem -Path $FolderLocation -Recurse -Include '*.txt' | % {
$FilesInFolder = $FilesInFolder + 1
$Length = $_.Length
$FolderSize = $FolderSize + $Length
}
Write-Host $FolderSize
}

Answer 1

You are iterating over $FolderArray twice, once in the foreach($i in $FolderArray) loop, and then again inside the loop body:
foreach($i in $FolderArray){
Get-ChildItem $FolderArray # don't do this
}
If you want to look into each folder in $FolderArray individually, reference the current variable (in your example that would be $i).
I would recommend saving the output from Get-ChildItem to a variable and then grab the size and count of the files from that:
# keep folders as DirectoryInfo objects rather than strings
$FolderArray = Get-ChildItem -Path $ProcessedLocation
foreach ($Folder in $FolderArray)
{
# retrieve all *.txt files in $Folder
$TxtFiles = Get-ChildItem -Path $Folder -Recurse -Include '*.txt'
# get the file count
$FilesInFolder = $TxtFiles.Count
# calculate folder size
$FolderSize = ($TxtFiles | Measure -Sum Length).Sum
# write folder size to host
$FolderSizeMB = $FolderSize / 1MB
Write-Host "$Folder is $FolderSizeMB MB in size"
}