PowerShell " Parameter set cannot be resolved" When Calling Other Script

Question

I'm struggling to call a second script in one of my PowerShell scripts at the moment using Invoke-Expression. It's currently producing an error:

"Parameter set cannot be resolved using the specified named parameters."

Annoyingly, it works fine for one switch (being -ServerDriveReport), but doesn't work for the other.

The first script (called DriveReport.ps1) is like:

[cmdletbinding()]
Param(
    [Parameter(ParameterSetName="ServerDriveReport")]
    [switch]$ServerDriveReport,

    [Parameter(ParameterSetName="VMDriveReport")]
    [switch]$VMDriveReport)

If($ServerDriveReport){
Invoke-Expression "& 'C:\Scripts\Drive Report\EmailDriveReport.ps1' -ServerDriveReport"}

If($VMDriveReport){
Invoke-Expression "& 'C:\Scripts\Drive Report\EmailDriveReport.ps1' -VMDriveReport"}

The "EmailDriveReport.ps1" script is like:

[cmdletbinding()]
Param(
    [Parameter(ParameterSetName="ServerDriveReport")]
    [switch]$ServerDriveReport,

    [Parameter(ParameterSetName="VMDriveReport")]
    [switch]$VMDriveReport)

If($ServerDriveReport){
# Send an email containing the server drive report}

If($VMDriveReport){
# Send an email contining the VM drive report}

When running "DriveReport.ps1 -ServerDriveReport" everything works as expected. But when running "DriveReport.ps1 -VMDriveReport", that's when I get the aforementioned error message.

Has anyone seen this before?

Any help would be greatly appreciated!

mklement0 · Accepted Answer · 2018-07-04 23:52:06Z

2

Without attempting to solve your immediate problem (which is not obvious to me from the code posted), consider using the automatic $PSBoundParameters variable via splatting to pass the parameters through to the 2nd script:

[cmdletbinding()]
Param(
    [Parameter(ParameterSetName="ServerDriveReport")]
    [switch]$ServerDriveReport,

    [Parameter(ParameterSetName="VMDriveReport")]
    [switch]$VMDriveReport)
)

& 'C:\Scripts\Drive Report\EmailDriveReport.ps1' @PSBoundParameters

Generally, Invoke-Expression should be avoided, because there are usually more robust solutions available and because it presents a security risk if invoked on untrusted strings.

edited Jul 4, 2018 at 23:52

answered Jul 4, 2018 at 23:00

mklement0

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RobTheRobot16 · Accepted Answer · 2018-07-09 12:46:50Z

0

Thanks for the help! I managed to resolve this by carefully going over the script and finding out one of the Else statements was calling the file incorrectly. I've now changing this to: & 'C:\Scripts\Drive Report\EmailDriveReport.ps1' as suggested.

answered Jul 9, 2018 at 12:46

RobTheRobot16

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