Can you use strongly typed / versioned powershell cmdlet parameters, or a C#-like using directive?

Question

I'm working with the below type in powershell:

Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91

I create objects, pass them around, return them from cmdlets etc. Here's an example:

Import-Module SQLPS

function New-SQLSMORelocateFile {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory=$true, Position=0)]
        [ValidateNotNullOrEmpty()]
        [string] $logicalName,

        [Parameter(Mandatory=$true, Position=1)]
        [ValidateNotNullOrEmpty()]
        [string] $physicalName
    )

    New-Object "Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" `
     -ArgumentList $logicalName, $physicalName
}

I want to pass this value into another powershell cmdlet, as follows:

function Restore-SQLDatabaseFromDisk {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory=$false)]
        [Microsoft.SqlServer.Management.Smo.RelocateFile] $overrideDataFile
    )

    # Do stuff
}

But when I do, I get the following helpful error:

PSInvalidCastException: Cannot convert the "Microsoft.SqlServer.Management.Smo.RelocateFile" value of type "Microsoft.SqlServer.Management.Smo.Re locateFile" to type "Microsoft.SqlServer.Management.Smo.RelocateFile". ArgumentTransformationMetadataException: Cannot convert the "Microsoft.SqlServer.Management.Smo.RelocateFile" value of type "Microsoft.SqlServer. Management.Smo.RelocateFile" to type "Microsoft.SqlServer.Management.Smo.RelocateFile". ParameterBindingArgumentTransformationException: Cannot process argument transformation on parameter 'overrideDataFile'. Cannot convert the "Micr osoft.SqlServer.Management.Smo.RelocateFile" value of type "Microsoft.SqlServer.Management.Smo.RelocateFile" to type "Microsoft.SqlServer.Management.Smo.RelocateFile".

I've seen this before; it's because the loaded "RelocateFile" version mismatches the one returned from my New-SQLSMORelocateFile() (which is required the SQLPS Restore-SqlDatabase cmdlet).

Whenever I use the "RelocateFile" type in my module, it always needs to be the "Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" type, rather than the default loaded by SQLPS.

Is there a Powershell equivalent to C#'s "using" directive to override the behaviour of a type in a module, as demonstrated below?:

https://msdn.microsoft.com/en-us/library/sf0df423.aspx

As in the 3rd example: using Project = PC.MyCompany.Project;

Alternatively, is there a way I can define a specific version of a parameter type, like this:

function Restore-SQLDatabaseFromDisk {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory=$false)]
        ["Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"] $overrideDataFile
    )

    # Do stuff
}

The above obviously produces a syntax error, but I've not been able to come up with or find a way to do it.

Answer 1

The type literal syntax allows fully qualified type names, just do:

param(
    [Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91]$MyParameter
)