You may want to look at "Error Handler Priority" in VFP9 help


>What is the sequence in which error handling is processed? In my particular instance, I'm trying to remove from a page in a pageframe all labels of a certain name. I'm doing this in the valid of a textbox on the main form. My code is

>WITH thisform.pframe
>     .
>     some code
>     .
>	WITH .pgPassFail
>		** Remove the "Board Number" objects from the pass/fail page
>		iBoard = 0
>		DO WHILE .T.
>			iBoard = iBoard + 1
>			TRY
>				.RemoveObject(".lblBoard"+TRANSFORM(iBoard))
>			CATCH
>				EXIT
>			ENDTRY
>		ENDDO
>	ENDWITH
>     .
>     more code
>     .
>ENDWITH

>
>I know there are other (probably better) ways of doing this. I'm not looking for help on that as I'm (pretty sure I can work that out on my own. But........
>
>when the object doesn't exist, I would have expected the TRY/CATCH block to kick in and execute the code in the CATCH section. Instead, the form ERROR method is invoked
>
>So. Assuming that all of the following exist
>
>1. ON ERROR
>2. Form Error Method Code
>3.. Control Error Method Code
>4. TRY/CATCH code
>
>What is the sequence in which the error checking takes place?
>
>Thanks...........Rich