Sort hashtable and put into a new hashtable - powershell

Question

I cannot figure out why the loop below is return null keys.
I think $hashSorted is not of type Hashtable; so how do I force it to be?
Thinking now I need a deep/copy? I just want to sort my hashtable and put it into another hashtable.
This might be a dup of: Sort Hashtable and assign it to a new variable in Powershell
My original questiion was why the keys were null when doing the loop.
Then I realized it probably wasn't a hashtable. Still trying the answers there.
Reference: How can I enumerate a hashtable as key-value pairs / filter a hashtable by a collection of key values
cls
$hashFilesAndSizes = #{}
$hashSorted = #{}
$hashFilesAndSizes.Add("file1.txt",1000)
$hashFilesAndSizes.Add("file2.txt",200)
$hashFilesAndSizes.Add("file3.txt",750)
$hashFilesAndSizes.GetEnumerator() | sort value #Displays sorted hash table
Write-Host "Second Try - put in another hashtable"
$hashSorted = $hashFilesAndSizes.GetEnumerator() | sort value #put into a new variable
Write-Host "Original variable in original Order"
$hashFilesAndSizes
Write-Host "Sorted"
$hashSorted #show results
Write-Host "Why loop has null keys?"
foreach($key in $hashSorted.Keys)
{
Write-Host "Key=$key"
#if (-not ([string]::IsNullOrEmpty($key)))
#{
$keyPadded = $key.PadRight(50," ")
$fileSize = $hashSorted[$key]
$fileSizeFormatted = $fileSize.ToString("000,000")
Write-Host "$keyPadded size=$fileSizeFormatted "
#}
}
Write-Host "Test with enumerator"
foreach($item in $hashSorted.GetEnumerator())
{
$key = $hashSorted.Key
Write-Host "Key=$key"
#if (-not ([string]::IsNullOrEmpty($key)))
#{
$keyPadded = $key.PadRight(50," ")
$fileSize = $hashSorted.Value
$fileSizeFormatted = $fileSize.ToString("000,000")
Write-Host "$keyPadded size=$fileSizeFormatted "
#}
}
Results:
> Name Value
>
> ---- ----- file2.txt 200
> file3.txt 750
> file1.txt 1000
> Second Try - put in another hashtable Original variable in original
> Order file3.txt 750
> file1.txt 1000
> file2.txt 200
> Sorted file2.txt 200
> file3.txt 750
> file1.txt 1000
> Why loop has null keys? Key= You cannot call a method on a null-valued
> expression. At C:\Scripts\HashTableSortTest.ps1:23 char:37
> + $keyPadded = $key.PadRight <<<< (50," ")
> + CategoryInfo : InvalidOperation: (PadRight:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull Index operation failed; the array index evaluated to null. At
> C:\Scripts\HashTableSortTest.ps1:24 char:35
> + $fileSize = $hashSorted[ <<<< $key]
> + CategoryInfo : InvalidOperation: (:) [], RuntimeException
> + FullyQualifiedErrorId : NullArrayIndex You cannot call a method on a null-valued expression. At
> C:\Scripts\HashTableSortTest.ps1:25 char:50
> + $fileSizeFormatted = $fileSize.ToString <<<< ("000,000")
> + CategoryInfo : InvalidOperation: (ToString:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull
> size=
>Test with enumerator Key= You cannot call a method on a null-valued expression. At C:\Scripts\HashTableSortTest.ps1:38 char:37
> + $keyPadded = $key.PadRight <<<< (50," ")
> + CategoryInfo : InvalidOperation: (PadRight:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At
> C:\Scripts\HashTableSortTest.ps1:40 char:50
> + $fileSizeFormatted = $fileSize.ToString <<<< ("000,000")
> + CategoryInfo : InvalidOperation: (ToString:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull
> size= Key= You cannot call a method on a null-valued expression. At C:\Scripts\HashTableSortTest.ps1:38 char:37
> + $keyPadded = $key.PadRight <<<< (50," ")
> + CategoryInfo : InvalidOperation: (PadRight:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At
> C:\Scripts\HashTableSortTest.ps1:40 char:50
> + $fileSizeFormatted = $fileSize.ToString <<<< ("000,000")
> + CategoryInfo : InvalidOperation: (ToString:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull
> size= Key= You cannot call a method on a null-valued expression. At C:\Scripts\HashTableSortTest.ps1:38 char:37
> + $keyPadded = $key.PadRight <<<< (50," ")
> + CategoryInfo : InvalidOperation: (PadRight:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At
> C:\Scripts\HashTableSortTest.ps1:40 char:50
> + $fileSizeFormatted = $fileSize.ToString <<<< ("000,000")
> + CategoryInfo : InvalidOperation: (ToString:String) [], RuntimeException
> + FullyQualifiedErrorId : InvokeMethodOnNull
> size=

Answer 1

This
$hashSorted = $hashFilesAndSizes.GetEnumerator() | sort value
does not produce a new hashtable. Instead, it produces an array of DictionaryEntry objects. Now since $hashSorted is, in fact, not a hashtable, there is no Keys property and indexing by value won't work. To properly construct a new hashtable that preserves key order you have to do
$hashSorted = [ordered] #{}
$hashFilesAndSizes.GetEnumerator() | sort value | foreach {$hashSorted[$_.Key] = $_.Value}

Answer 2

Try to run in new clear powershell context. I suggest your environment has some variables saved in cache.
The only error I see is in the second loop. You're using $hashSorted inside the loop instead of $item. Should be:
$key = $item.Key
....
$fileSize = $item.Value
EDIT: Btw, sorting with GetEnumerator() works just fine.
EDIT 2: $hashSorted.Keys is empty as $hashSorted is not a hashtable, just a collection of key-value pairs.

Answer 3

Write-Host "Test with enumerator"
foreach($item in $hashSorted.GetEnumerator())
{
$key = $item.Key # Not $hashSorted.Key !
Write-Host "Key=$key"
#if (-not ([string]::IsNullOrEmpty($key)))
#{
$keyPadded = $key.PadRight(50," ")
$fileSize = $item.Value # Not $hashSorted.Value !
$fileSizeFormatted = $fileSize.ToString("000,000")
Write-Host "$keyPadded size=$fileSizeFormatted "
#}
}