Get-PSBoundParameters

gistfile1.txt

function Get-PSBoundParameters {
    <#
        .SYNOPSIS
            Get-PSBoundParameters

        .DESCRIPTION
            Get the bound parameters of the current command

        .PARAMETER ParameterSetName
            Filter the bound parameters by the specified ParameterSetName

        .EXAMPLE
            Get-PSBoundParameters | ft -a

            > Key            Value
            > ---            -----
            > ParamA         ValueA
            > ParamB         ValueB
            > ParamC         ValueC
    #>
    [CmdletBinding()]
    param(
        [Parameter()]
        [System.String] $ParameterSetName
    )
    
    $callstack = (Get-PSCallStack)[1]

    $frameVariables = $Callstack.GetFrameVariables()
    $myPSBoundParameters = [System.Collections.Generic.Dictionary[System.String, System.Object]]::new()

    $parameters = $Callstack.InvocationInfo.MyCommand.Parameters
    if ($Parameters.Count -eq 0) {
        return $MyPSBoundParameters
    }

    $boundParameters = $callstack.InvocationInfo.BoundParameters

    $parameters.GetEnumerator() | ForEach-Object `
        {
            # Filter by ParameterSetName if specified
            if ($ParameterSetName -and $_.Value.Attributes.ParameterSetName -notmatch $ParameterSetName) {
                return
            }

            # If the parameter is bound then use that value
            if ($boundParameters.ContainsKey($_.Key)) {
                $myPSBoundParameters[$_.Key] = $boundParameters[$_.Key]
                return
            }

            # If the parameter is not bound then check if it is a variable in the current frame, and use that value
            if ($frameVariables.ContainsKey($_.Key) -and $null -ne $frameVariables[$_.Key].Value) {
                $myPSBoundParameters[$_.Key] = $frameVariables[$_.Key].Value
            }
        }

    $myPSBoundParameters
}