Powershell Conditional Dynamic Parameters

Test-ConditionalParameter.ps1

function Test-ConditionalParameter
{
  param
  (
    [validateset('Value1','Value2')]
    [parameter()]
    $Parameter1
  )

    dynamicparam
    {
        if ($PSBoundParameters.Parameter1 -eq 'Value1')
        {
            $Dictionary = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameterDictionary
            $ParamAttr = New-Object -TypeName System.Management.Automation.ParameterAttribute
            $AttributeCollection = New-Object -TypeName 'Collections.ObjectModel.Collection[System.Attribute]'
            $AttributeCollection.Add($ParamAttr)
            $Parameter = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter -ArgumentList @('Parameter2', [string], $AttributeCollection)
            $Dictionary.Add('Parameter2', $Parameter)
            return $Dictionary
        }   
    }

    process {}
}