如何检查Start-Process的返回码

Question

我想为启动过程正确获取返回代码。即使启动过程以错误结束，它也不会正确地抛出重新编码。如果我在run.bat中遇到错误，也不会触发错误处理代码。 我的代码有什么问题

感谢您的支持。

$errorlog = "D:\EmailConnector-Disc Optimus\logs\error.log"
$emailconnecter_log = "D:\EmailConnector-Disc Optimus\logs\connector.log"

#1  print "Running email bat file...... \n";
Write-Host "Running email bat file...... \n"
$prog="cmd.exe"
$params=@('/C','"D:\EmailConnector-Disc Optimus\run.bat"','connector.log')
$rc = start-process $prog $params -WorkingDirectory "D:\EmailConnector-Disc Optimus" -RedirectStandardOutput $emailconnecter_log -PassThru -wait
    if (-not $?) 
    { 
    Write-Host $rc
        $status = "running Daily email bat file failed on $hostname"
        Del_Daily
        Del_Dat
        Send_Mail
        exit
    }
    else
    {
    Write-Host $rc
    Write-Host "Email send sucess fully....."
    }