Flags Enum parameter demo

Test-Flags.ps1

Add-Type -TypeDefinition @'
    using System;

    [Flags]
    public enum MyEnum
    {
        Option1 = 0x1,
        Option2 = 0x2,
        Option3 = 0x4,
        All = Option1 | Option2 | Option3
    }
'@

function Test-Flags
{
    [CmdletBinding()]
    param (
        [MyEnum] $Param
    )

    # Note:  The version of .NET in PowerShell 2.0 doesn't have the HasFlag() method, so you'd
    # have slightly different code if you want your function to support PS2.0.

    if ($Param.HasFlag([MyEnum]::Option1))
    {
        # Do Option1 stuff
        Write-Host 'Option1 set'
    }

    if ($Param.HasFlag([MyEnum]::Option2))
    {
        # Do Option2 stuff
        Write-Host 'Option2 set'
    }

    if ($Param.HasFlag([MyEnum]::Option3))
    {
        # Do Option3 stuff
        Write-Host 'Option3 set'
    }
}

Write-Host 'Testing Option1,Option2'
Test-Flags -Param Option1,Option2

Write-Host 'Testing All'
Test-Flags -Param All