Array – call the constructor with array parameters from PowerShell

I am a beginner and know c# moderation Recently, I was writing this power shell script and wanted to create a HashSet So I wrote ($azaz is an array)

[System.Collections.Generic.HashSet[string]]$allset = New-Object System.Collections.Generic.HashSet[string]($azAZ)

And press I received this message:

New-Object : Cannot find an overload for "HashSet`1" and the argument count: "52".
At filename.ps1:10 char:55
+ [System.Collections.Generic.HashSet[string]]$allset = New-Object System.Collecti ...
+                                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [New-Object],MethodException
    + FullyQualifiedErrorId :         ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand

Then, I use the Google constructor in PowerShell using array parameters and change the code to:

[System.Collections.Generic.HashSet[string]]$allset = New-Object System.Collections.Generic.HashSet[string](,$azAZ)

Somehow, I got the news now:

New-Object : Cannot find an overload for "HashSet`1" and the argument count: "1".
At C:\Users\youngvoid\Desktop\test5.ps1:10 char:55
+ [System.Collections.Generic.HashSet[string]]$allset = New-Object System.Collecti ...
+                                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [New-Object],MethodException
    + FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand

Could not find overload for HashSet and parameter count 1? Are you kidding me? thank you.

Solution

This should work:

[System.Collections.Generic.HashSet[string]]$allset = $azAZ

to update:

To use arrays in constructors, arrays must be strongly typed Here is an example:

[string[]]$a = 'one','two','three'
$b = 'one','three'

# This works
$hashA = New-Object System.Collections.Generic.HashSet[string] (,$a)
$hashA
# This also works
$hashB = New-Object System.Collections.Generic.HashSet[string] (,[string[]]$b)
$hashB
# This doesn't work
$hashB = New-Object System.Collections.Generic.HashSet[string] (,$b)
$hashB