Powershell Passing Object and String to invoke-expression [duplicate] - powershell

Question

This question already has answers here:
calling Invoke-Expression with Parameters in Powershell
(2 answers)
Closed 6 years ago.
I am trying to pass an object and a string variable to "Get-ADUser" commandlet using Invoke-Expression.
The credentials are built like this:
$secpasswd = ConvertTo-SecureString $pwd -AsPlainText -Force
$mycreds = New-Object System.Management.Automation.PSCredential ($uid, $secpasswd)
then a string is composed with additional parameters:
if ($dc)
{
$newVar = " -server $dc"
}
if ($ou)
{
$newVar = $newvar + " -Serchbase $ou"
}
and finally the following is executed
$AllADUsers = iex "Get-ADUser $newVar -Credential $($mycreds) -Filter * -Properties *" | Where-Object {$_.info -NE 'Migrated'}
but it brings up the credential dialog and an error if i just click ok
Get-ADUser : Cannot validate argument on parameter 'Credential'. The argument is null or empty. Provide an argument that is not null or empty, and then try the command again.
At line:1 char:54
+ Get-ADUser -server srv-v-hh001.bwg.corp -Credential System.Management.Automatio ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Get-ADUser], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.ActiveDirectory.Management.Commands.GetADUser
I think this is because iex is parsing $mycreds as a string, is there a way to tell Powershell this is an object?

Answer 1

Why do you need IEX at all? Use hashtable to build parameters for Get-ADUser and then just splat it:
$secpasswd = ConvertTo-SecureString $pwd -AsPlainText -Force
$mycreds = New-Object System.Management.Automation.PSCredential ($uid, $secpasswd)
$Splat = #{
Credential = $mycreds
Filter = '*'
Properties = '*'
}
if ($dc)
{
$Splat.Server = $dc
}
if ($ou)
{
$Splat.SearchBase = $ou
}
$AllADUsers = Get-ADUser #Splat | Where-Object {$_.info -NE 'Migrated'}
BTW, you have a typo in your SearchBase parameter name.