Obtaining exit code from schtasks - powershell

Question

I'm trying to start a scheduled task from a Powershell script, like this:
schtasks /Run /TN "Test" > nul
I'm testing as I go, so I've set up the task to call a batch file that intentionally does not exist.
Once this happens, I see on the next line of code that the error level was 0, despite seeing 0x1 in the Task Scheduler's Last Run Result column.
In the console, I see
SUCCESS: Attempted to run the scheduled task "Test"
This looks to me as though it's considering the launch successful, and not waiting around to capture the error reported to Task Scheduler. (0x1)
How can I detect this error in Powershell?

Answer 1

I seem to remember that schtasks.exe just instructs the the task scheduler to go run a job and immediately exists without waiting around. Hence it always returning 0 unless the task itself can't be found (exit code: 1) or something catastrophic happens (exit code: no idea).
If you want to get the "Last Run Result" you'll need to query the task, for example:
schtasks.exe /v /query /tn "A Real Task" /fo list
This will return the task details including its run status as a list of fields and values which will include the "Last Run Result".
To see more formatting options run:
schtasks.exe /query /?
So you could capture data about a task (in this case CSV formatted) by doing:
$taskinfo = schtasks.exe /query /tn "A Real Task" /FO CSV /V
...then process it in some way. Obviously you'd need to check the task's run status to make sure it's completed before reading the "Last Run Result".