Powershell Try Catch - powershell

Question

I've a simple powershell script below which basically executes the abc.exe (console application) with few arguments.
& abc.exe ar1 ar2
abc.exe file is .net so it has it's own exception handler.
Whenever abc.exe throws exception I would like the Powershellscript to catch and log/echo.
Could someone help me how to achieve above.

Answer 1

No.
The exception in abc.exe will bubble up to main method, not any more. But you can check the ERRORLEVEL of abc.exe by looking at $LASTEXITCODE. (Check this)
What you should do:
Your abc.exe, as any exe, should return errorlevel 0 if everything was ok and other number in case of error
Abc.exe main method could write an error message in case of problem. This way when you invoke it from a PowerShell script you will see the error message in console and later your script will check for errorlevel.
Additionally, you can also use different exitcodes for errorlevels in abc.exe to provide some information to PowerShell script. For example these are 7zip error levels.
0 --> No error
1 --> Warning
2 --> Fatal error
7 --> Command line error
8 --> Not enough memory for operation
255 --> User stopped the process