Searching for key in ConvertFrom-StringData hash - powershell

Question

I have a hash table that I got from a file, command used:
[array]$hash= Get-Content -raw '../../file.txt' | ConvertFrom-StringData
file.txt looks like this:
key=value
It works perfectly, the problem is when I trying to search using $hash.GetEnumerator.
I am trying to do something like this:
$hash.GetEnumerator() | where {$_.value -match 'value'} // or with key
It always returns an empty value. Got it from link, tried to create a local hash using $hash=#{} then add, and it worked(like for the guy from the link).
Note! $hash.GetEnumerator() | Sort-Object Name works for me too, and returning the right table.
Do you have any idea how can I search(-eq or -match) in the hash table that I have created?

Answer 1

try this
$hash.GetEnumerator() | where {$($_.Value) -match 'value'}
or like this
$hash.Keys | % {$($hash[$_]) -eq 'value'} | %{$hash[$_]}
or better, you can transform your hashtable into objects list
$hash.GetEnumerator() |
% {New-Object psobject -Property #{Name=$($_.Name); Value=$($_.Value)} } |
where Value -match 'value'

Answer 2

Your response to my comment asking for clarification didn't clarify too much, but I'm going to assume that you want to find the value for a particular key in the hashtable. That kind of lookup is the core functionality of hashtables.
$ht = #'
foo=23
bar=42
baz=5
'# | ConvertFrom-StringData
$key = 'bar'
$ht[$key] # returns 42
If you actually want a fuzzy match on the keys you could replace the direct lookup with a wildcard match like this:
$partialKey = 'ba*'
$ht.Keys | Where-Object {
$_ -like $partialKey
} | ForEach-Object {
$ht[$_] # returns 42 and 5
}
or a regular expression match like this:
$partialKey = '^ba'
$ht.Keys | Where-Object {
$_ -match $partialKey
} | ForEach-Object {
$ht[$_] # returns 42 and 5
}
As an alternative to looking up multiple keys in a loop you could also build a list of keys and use that list in a single lookup:
$partialKey = 'ba*'
$keys = $ht.Keys | Where-Object { $_ -like $partialKey }
$ht[$keys] # returns 42 and 5