Snippet of PowerShell to self-elevate a script

Self-Elevate.ps1

# ---------------------------------------  Self-elevate the script if required.  ---------------------------------------
#
# Physically include this in the client script, dot-sourcing will not work.
# From https://blog.expta.com/2017/03/how-to-self-elevate-powershell-script.html, but I made a few modifications myself.
# TODO: try making this a function.

try {
    if (-Not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] 'Administrator')) {
        if ([int](Get-CimInstance -Class Win32_OperatingSystem | Select-Object -ExpandProperty BuildNumber) -ge 6000) {
            Write-Verbose ("cmd type: {0}" -f $MyInvocation.MyCommand.CommandType)
            $hasErrors = $false
            # $CommandFile is the entire command line, passed as the -File argument to Powershell.exe.
            $CommandFile =  "`"" + $MyInvocation.MyCommand.Path + "`" "
            foreach ($key in $MyInvocation.BoundParameters.Keys) {
                $parm = $MyInvocation.BoundParameters[$key]
                $parmType = $parm.GetType().Name
                Write-Verbose ("parm {0} type is {1}" -f $key,$parmType)
                if ($parmType -eq "SwitchParameter" <# -or $parmType -eq "Boolean" #> ) {
                    if ($parm) {
                        $CommandFile += ("-{0} " -f $key)
                    }
                    else {
                        # Sorry, I tried.
                        Write-Error ("Can't pass switch parameter -{0} with value `$False. Re-run as Administrator or don't specify `$False for a switch parameter." -f $key) `
                            -Category InvalidArgument
                        $hasErrors = $true
                    }
                }
                else {
                    $CommandFile += ("-{0} {1} " -f $key,$parm)
                }
            }
            $CommandFile += $MyInvocation.UnboundArguments
            if ($hasErrors) {
                throw "Errors were encountered"
            }
            if ($MyInvocation.MyCommand.Path -match '^S:\\') {
                Write-Warning "This ain't gonna work if you don't have drive S: mapped as admin.  Try 'net use s: \\p8files\Pulse8Share'."
            }
            Write-Verbose "Starting: $CommandFile"
            # 'help powershell.exe -full' for Powershell args. -NoExit to debug. -NoProfile for faster startup and... better security??
            Start-Process -FilePath $PsHome\PowerShell.exe -Verb Runas `
                -ArgumentList @( <# "-NoExit", #> "-NoProfile", "-File", $CommandFile)
            Exit
        }
    }
}
catch {
    throw $Error[0]
}

# -------------------------------------------------  End self-elevate  -------------------------------------------------