ValueFromPipeline

Test-ValueFromPipeline.ps1

function Test-ValueFromPipeline {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory, ValueFromPipeline)]
        [string]
        $MyString,
        [switch]
        $MySwitch)

    begin {
        Write-Host "Begin $MyString"
        Write-Host $MySwitch
    }

    process {
        Write-Host "Process $MyString"
        Write-Host $MySwitch
    }

    End {
        Write-Host "Ended $MyString"
        Write-Host $MySwitch
    }
}