Exception handling..????

Ron S

hello ALL, I have a doubt. if i want to continue normally after catching the expecteed exception is it possible?? Ex:- try { int intDivVal; for (int i =o ;i<5;i++) { int Divval=10/i; } } catch(dividebyzeroexception ex) { messagebox.show(ex.message.tostring()); } i want to continue after showing the message. Thanks in advance

Bharath.S Ron

originSH

yep your code there will carry right on. If you continue you have to think about anything that might have broken during an exception though i.e. was something being set to a value or a stream being opened. Carrying on can lead to losing data or more expcetions. If you want to do something with the exception and then let the exception carry on then you can catch(dividebyzeroexception ex) { messagebox.show(ex.message.tostring()); throw ex; }

Talal Sultan

hello It will continue as you wrote it. Alternatively, you can use the finally statement to make sure some code is executed in all cases (try succeeded or catch executed) Talal

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Eduard Keilholz

Yeah, I understand you want to continue your loop after the exception is thrown... In your code the try & catch block contains the loop... try { int intDivVal; for (int i =o ;i<5;i++) { int Divval=10/i; } } catch(dividebyzeroexception ex) { messagebox.show(ex.message.tostring()); } However, the loop should contain a try & catch block in order to continue the loop try { int intDivVal; for (int i =o ;i<5;i++) { try { int Divval=10/i; } catch (Exception ex) { MessageBox.Show("Oops, 10 / " + i + " failed!"); } } } catch(dividebyzeroexception ex) { messagebox.show(ex.message.tostring()); }

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Scott Dorman

originSH wrote:

catch(dividebyzeroexception ex) { messagebox.show(ex.message.tostring()); throw ex; }

You actually want to just do a throw here rather than throw ex. The throw ex causes the original stack trace information to be lost while throw preserves it.

Scott.

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originSH

ahhh yeah "throw;" maps to rethrow doesn't it...

Scott Dorman

Yep. throw is rethrow in the IL.

Scott.

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Rudolf Jan

You should think about continuation that makes sense. You may return to an input for example, or substitute the illegal result with something that makes sense for you application. Just ignoring the exception is generally not a very good idea.

Rudolf Heijink