Throw in Catch - how can I tell

[Elmo Watson]

I've got one main method, with a Try Catch block. In that, I catch the error
and put it on a label.

However, inside the Try portion, I also run another method. I have a
Try/Catch block there, also, except I just have 'Throw' in the Catch
portion.

How can I send something from this 'internal' method, to the 'outer' method,
so I can see where the actual failure is coming from?

 

[zainab]

You can remove the try/catch block from the "inside" method altogether
and have the "outside" catch actually catch it.

If you want to keep the try/catch inside, you can have something like:

catch (Exception ex)
{
throw ex;
}

instead of just "throw" and send the exception "up", to be catched by
the catch block there.

Elmo Watson escreveu:

 

[Elmo Watson]

What's the difference between 'throw' and 'throw ex'?

With the 'Throw', it does get sent up to the main method - but there is
nothing in the error message, that distinctly identifies it as being from
the 'inner' method -
What I'd like to know is how to Add something to the error message, so when
the error happens, it's easily identified as being from the 'inner' method.

 

[zainab]

You can either look up in the "upper" catch's exceptions and read the
name of the method where the exception was thrown to identify it
(TargetSite.Name, i think) or concatenate something to the exception
string in the "inside" catch.

maybe somethign like:

catch (Exception ex)
{
throw new Exception("Inner:" + ex);
}

?
I'm not sure if this is what you want...

happy new year

 

[Alvin Bruney [ASP.NET MVP]]

If you are having this much problems separating the reporting of the error,
maybe you should separate the two pieces of code into their own try/catch
blocks. It doesn't hurt performance but actually improves your reporting
scenario.

--
--
Regards,
Alvin Bruney [MVP ASP.NET]

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