PowerShell Dynamic Block Example

PowerShellDynamicBlock.ps1

DynamicParam {
    if ($ChannelType -eq 'Private') {
        # Define parameter attributes
        $paramAttributes = New-Object -Type System.Management.Automation.ParameterAttribute
        $paramAttributes.Mandatory = $true

        # Create collection of the attributes
        $paramAttributesCollect = New-Object -Type `
            System.Collections.ObjectModel.Collection[System.Attribute]
        $paramAttributesCollect.Add($paramAttributes)

        # Create parameter with name, type, and attributes
        $dynParam1 = New-Object -Type `
        System.Management.Automation.RuntimeDefinedParameter("PrivateChannelOwner", [string],
            $paramAttributesCollect)

        # Add parameter to parameter dictionary and return the object
        $paramDictionary = New-Object `
            -Type System.Management.Automation.RuntimeDefinedParameterDictionary
        $paramDictionary.Add("PrivateChannelOwner", $dynParam1)
        return $paramDictionary
    }
}