Powershell to close a running program gracefully without use's interact

Question

I have this powershell code to close a program gracefully
Get-Process MyProgram |   Foreach-Object { $_.CloseMainWindow() | Out-Null }
the problem is that it will pop-up a Windows asking user to hit 'OK' or to 'Cancel'! what powershell code I can force it selects OK and not prompts for user to interact? thanks.
Thang Mo

Answer 1

Here is a workaround:
$wshell = new-object -com wscript.shell
$wshell.AppActivate("Microsoft Outlook")
$wshell.sendkeys("{ENTER})
You could send the signal to "$_.CloseMainWindow()" then check to see if it closed or is waiting for user interaction. If it is still open then run the wscript code to close it. You may want to change the "{ENTER}" to reflect the actual
option you want to use fore example ALT + Y would select yes so you can enter that by changing the last line to:
$wshell.Sendkeys("%(Y)")
Or if you want to say NO:
$wshell.Sendkeys("%(N)")
Hope this helps.
Regards,
Here is a full example:
$isOutlookOpen = Get-Process outlook*
if($isOutlookOpen = $null){
    # Outlook is already closed run code here:
else {
     $isOutlookOpen = Get-Process outlook*
     # while loop makes sure all outlook windows are closed before moving on to other code:
         while($isOutlookOpen -ne $null){
            Get-Process outlook* | ForEach-Object {$_.CloseMainWindow() | Out-Null }
            sleep 5
            If(($isOutlookOpen = Get-Process outlook*) -ne $null){
            Write-Host "Outlook is Open.......Closing Outlook"
                $wshell = new-object -com wscript.shell
                $wshell.AppActivate("Microsoft Outlook")
                $wshell.Sendkeys("%(Y)")
            $isOutlookOpen = Get-Process outlook*
        #Outlook has been closed run code here: