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using Goto (Read 965 times)

FSGROUP Full Member Offline No personal text Posts: 179 Location: Edmonton, Alberta, Canada Joined: Jan 14^th, 2004	using Goto Mar 3^rd, 2004 at 7:34pm	Print Post
	What difference does it make whether I do error checking in On Element Change or On Element Exit? I have a LE named FirstName and this is the code: if @Len(@Num(FirstName)) > 0 and FirstName <> "" then { @MsgBox("Error: First Name cannot contain digits.","","") goto FirstName } If I put this code inside On Element Change and I enter a first name with digits in it, I receive the error message 3 times repeatedly and then I return to the FirstName LE. However, if I put the code inside On Element Exit, I get the error message once and then I arrive in another LE (named LastName). What gets weirder is that if i change "goto FirstName" to "goto Company" in Element Exit, where Company is another LE, I will arrive in the correct LE? Why am I receiving 3 error messages w/ On Element Change when the value of the LE has not changed after I get the first error message? Thanx


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Bharat_Naik Senior Member Members Offline Ever ready to learn and share Posts: 1202 Location: Chicago, Illinois Joined: Dec 16^th, 2003	Re: using Goto Reply #1 - Mar 3^rd, 2004 at 9:11pm	Print Post
	I got the same results you are getting. I believe this has to do with the bug in goto the same element, that has been fixed in ver 1.0.2. If you remove the goto the same element statement, you will get the error message only once. I am wondering, why would you put the statement in Element Change event? You are not getting the message until you exit the element anyway. Sometimes putting such statement in Immediate Element Change Event because you want to have feedback before you exit the element as it is used in the phone template snippet by Mark in the programming examples. In most of the other cases it goes in the Element exit events.


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dman Member Offline A Complete Dummy Posts: 19 Joined: Feb 18^th, 2004	Re: using Goto Reply #2 - Mar 4^th, 2004 at 12:27am	Print Post
	OK I have a goto question and I'm sure it's a dumb goto question but I am trying to learn. If I put a goto command in the form / on form entry (Exactly like the goto CU# in the quickanswer this month), it doesn't work at all. It still goes to the uppermost element. If I put it in the form/ on element entry, it works. Did I read it wrong and therefore am trying to do it wrong?


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Bharat_Naik Senior Member Members Offline Ever ready to learn and share Posts: 1202 Location: Chicago, Illinois Joined: Dec 16^th, 2003	Re: using Goto Reply #3 - Mar 4^th, 2004 at 1:43am	Print Post
	It is a good observation. I could duplicate what you have detected. There are several events and we do not exactly know what is the programming you have in each event. Moreover, we do not know with certainty that which event fires first out of these two... namely in form element entry or Form Entry.... my guess is form entry fires first and then Form element entry. Bob Hansen questioned not too long ago about the sequence of events but I do not think anybody is quite clear yet. And on the top of all these, we have some well established problems with goto command, namely goto the same element would not work, goto in Global Code does not work and now goto in Form Element on Form entry event does not work. �Well, atleast we know what works in this instance. �
	« Last Edit: Mar 4^th, 2004 at 9:37am by Bharat_Naik »

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dman Member Offline A Complete Dummy Posts: 19 Joined: Feb 18^th, 2004	Re: using Goto Reply #4 - Mar 4^th, 2004 at 2:02am	Print Post
	Maybe that's why he said we need version 1.0.2?


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Justin_ICC Junior Member Offline Posts: 95 Joined: Feb 5^th, 2004	Re: using Goto Reply #5 - Mar 5^th, 2004 at 9:44pm	Print Post
	Well ehre is my view on how event processing probably works (based on past programming experience). When you first load up the form it launches the form entry event. When you then open up a record in the form it should then fire the element entry event. The on element change should fire when you try to switch LE's or if its form change - when you change from form to subform? (not sure on this one) or to another form, Immediate element change would fire every time something changes in the LE (ie if you were to type abc it would fire the event 3 times). When you switch to another record or exit the form it then Fires the Element exit and finally when exiting the form at the very end it fires the Form exit.


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Bob_Hansen Senior Member Members Offline WOW, They have the Internet on computers now! Posts: 1861 Location: Salem, NH Joined: Nov 24^th, 2002	Re: using Goto Reply #6 - Mar 6^th, 2004 at 5:29am	Print Post
	Hello Justin_ICC... Take a look at the discussions on this topic at: http://www.lantica.com/Forum2/cgi-bin/yabb/YaBB.pl?board=gen_disc;action=display... especially the details by Bharat_Naik on Feb 22. Still hoping for an "official" summary to work with.

	Bob Hansen Sesame Database Manager Professional Sensible Solutions Inc. Salem, NH 603-898-8223 Skype ID = sensiblesolutions
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