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Getting dynamic cmdlet parameters through reflection

Powershell provides some options: dynamic options, "depending on the context. The MSDN page explains the mechanism pretty well, but skinny is that to find out, you need to call GetDynamicParameters () , which returns a class containing additional parameters. I need get these parameters through reflection and (in this case), in the context of ReflectionOnly (that is, the types are loaded by ReflectionOnlyLoadFrom). So, there is no Assembly.InvokeMember ("GetDynamicParameters").

Can this be done?

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2 answers

. . powershell .

+2

, :

1:

#===================================================================================
# DEFINITION OF FREE FIELDS USED BY THE CUSTOMER
#-----------------------------------------------------------------------------------
# SYNTAX: @{ <FF-Name>=@(<FF-Number>,<isMandatory_CREATE>,<isMandatory_UPDATE>); }
$usedFFs = @{               
                      "defaultSMTP"=@(2,1,0); `
                      "allowedSMTP"=@(3,1,0); `
                       "secondName"=@(100,1,0); `
                            "orgID"=@(30001,1,0); `
            "allowedSubjectTypeIDs"=@(30002,1,0); `
            }

# FF-HelpMessage for input          
$usedFFs_HelpMSG = @{ 2="the default smtp domain used by the organizaiton. Sampel:'algacom.ch'"; `
                      3="comma seperated list of allowed smtp domains. Sampel:'algacom.ch,basel.algacom.ch'"; `
                      100="an additional organization name. Sampel:'algaCom AG')"; `
                      30001="an unique ID (integer) identifying the organization entry"; `
                      30002="comma seperated list of allowed subject types. Sampel:'1,2,1003,10040'"; `
            }

2: ,

#-------------------------------------------------------------------------------------------------------        
# Build-DynParams : Used to build the dynamic input parameters based on $usedFFs / $usedFFs_HelpMSG
#-------------------------------------------------------------------------------------------------------
function Build-DynParams($type) {
    $paramDictionary = New-Object -Type System.Management.Automation.RuntimeDefinedParameterDictionary

    foreach($ffName in $usedFFs.Keys) {
        $ffID = $usedFFs.Item($ffName)[0]
        $dynAttribCol = New-Object -Type System.Collections.ObjectModel.Collection[System.Attribute]
        $dynAttrib = New-Object System.Management.Automation.ParameterAttribute
        $dynAttrib.ParameterSetName = "__AllParameterSets"
        $dynAttrib.HelpMessage = $usedFFs_HelpMSG.Item($ffID)
        switch($type) {
            "CREATE" { $dynAttrib.Mandatory = [bool]($usedFFs.Item($ffName)[1]) }
            "UPDATE" { $dynAttrib.Mandatory = [bool]($usedFFs.Item($ffName)[2]) }
        }   
        $dynAttribCol.Add($dynAttrib)   
        $dynParam = New-Object -Type System.Management.Automation.RuntimeDefinedParameter($ffName, [string], $dynAttribCol)
        $paramDictionary.Add($ffName, $dynParam)        
    }
    return $paramDictionary         
}

3. ,

#-------------------------------------------------------------------------------------------------------
# aAPS-OrganizationAdd : This will add a new organization entry
#-------------------------------------------------------------------------------------------------------
Function aAPS-OrganizationAdd {
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory=$true,HelpMessage="The name of the new organization")] 
        [String]$Descr,
        [Parameter(Mandatory=$false,HelpMessage="The name of the parent organization")] 
        [String]$ParentDescr=$null,
        [Parameter(Mandatory=$false,HelpMessage="The status of the new organization [1=Active|2=Inactive]")] 
        [int]$Status = 1,
        [Parameter(Mandatory=$false,HelpMessage="If you want to see the data of the deactivated object")] 
        [switch]$ShowResult
    )
    DynamicParam { Build-DynParams "CREATE" }

    Begin {}

    Process {
        # do what oyu want here
    }

    End {}
}
+1

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