Exception::CLRError

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Hi All,

it seems dividing by zero, gets caught in the catch(Exception::CLRError).
So when to use catch(Exception::Error) in this case?

public static void main(Args _args)
{
    //System.Exception ex;
    try
    {
        int a = 1 / 0;
    }
    catch (Exception::CLRError)
    {
        error("error");
    }
    //catch (ex)
    //{
    //    error("error");
    //}
    catch (Exception::Error)
    {
        error("error");
    }
}

and what's the difference between catch (Exception::CLRError) and catch (ex)??

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Martin Dráb 236,570 Most Valuable Professional on at

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Exception::CLRError

catch(Exception::Error) catches X++ errors, typically generated by throw error().

catch (Exception::CLRError) is an old way of catching CLR exception, catch (ex) is a newer and better way - it directly gives you the exception, so you don't need to deal with things like getLastException(), extracting the actual exception from the reflection exception etc. Therefore consider catch (Exception::CLRError) as something legacy that shouldn't be used in new code.

Nevertheless note that X++ exceptions are now CLR exceptions too - instances of Microsoft.Dynamics.Ax.Xpp.ErrorException class. If you want to distinct X++ errors and other CLR exceptions, use catch(Exception::Error) before catch (ex) (the order is important). If you don't need that, use catch() if you aren't interested in the exception object, and catch (ex) otherwise.

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