Multiple mandatory parameters in a single parameter set

问题

I want to achieve the following in my parameter sets:

function [A | B] [C | D] (E) (F)

In English as concise as possible, I would like A, B, C and D to be Manadatory=$true but A and B can't be in the same command nor can C and D. E and F will always be optional.

I figured I could expand this with multiple ParameterSetName attributes following the below logic:

function A C (E) (F)
function A D (E) (F)
function B C (E) (F)
function B D (E) (F)

However the below sentence says each parameter set must have a unqiue parameter, but as you can see I use A and B twice each. The only way for the PowerShell runtime to identify them as unique parameter sets is by looking at two paremters, not just one.

Each parameter set must have a unique parameter that the Windows PowerShell runtime can use to expose the appropriate parameter set

Source

Is there some way to achieve this?

回答1:

EDIT with code after testing

So I created some mock code to show what I meant:

function Test-abcdef
{
    param
    (
    [Parameter(Mandatory = $true,ParameterSetName = 'a-c')]
    [Parameter(Mandatory = $true,ParameterSetName = 'a-d')]
    $a,

    [Parameter(Mandatory = $true,ParameterSetName = 'b-c')]
    [Parameter(Mandatory = $true,ParameterSetName = 'b-d')]
    $b,

    [Parameter(Mandatory = $true,ParameterSetName = 'a-c')]
    [Parameter(Mandatory = $true,ParameterSetName = 'b-c')]
    $c,

    [Parameter(Mandatory = $true,ParameterSetName = 'a-d')]
    [Parameter(Mandatory = $true,ParameterSetName = 'b-d')]
    $d,

    [Parameter]
    $e,

    [Parameter]
    $f
)

switch ($PsCmdlet.ParameterSetName)
{
    'a-c' {
        Write-Output $a $c
        break
    }
    'a-d' {
        Write-Output $a $d
        break
    }
    'b-c' {
        Write-Output $b $c
        break
    }
    'b-d' {
        Write-Output $b $d
        break
    }
}

}


help Test-abcdef

If you do help on the function as above it gives you the following:

NAME
Test-abcdef

SYNTAX
Test-abcdef -a <Object> -d <Object> [-e <Parameter>] [-f <Parameter>]  [<CommonParameters>]

Test-abcdef -a <Object> -c <Object> [-e <Parameter>] [-f <Parameter>]  [<CommonParameters>]

Test-abcdef -b <Object> -d <Object> [-e <Parameter>] [-f <Parameter>]  [<CommonParameters>]

Test-abcdef -b <Object> -c <Object> [-e <Parameter>] [-f <Parameter>]  [<CommonParameters>]

Which I believe is exactly what you wanted.

If this post worked for you, please mark it as answered

ORIGINAL POST:

I think you'll need to create 4 parameter sets, A-C, A-D, B-C and B-D, you will need to define all the parameters in each set, eg you'll need to define A twice, once in set A-C and once in set A-D.

Don't put E or F in any set.

来源：https://stackoverflow.com/questions/40999090/multiple-mandatory-parameters-in-a-single-parameter-set

标签

powershell