Microsoft KB Archive/129571

= PRB: Formset.LOAD Is Not the First Event to Fire =

Article ID: 129571

Article Last Modified on 2/12/2000

-

APPLIES TO


 * Microsoft Visual FoxPro 3.0 Standard Edition

-



This article was previously published under Q129571



SYMPTOMS
When a form set contains a Data Environment, the BeforeOpenTables event and the OpenTables method of the Data Environment are triggered before the Load event of the form set. This article explains the reason behind this implementation and offers a workaround if you want the Load event to execute before the tables are opened.



CAUSE
The Load event of a form set usually sets the environment of a form. In particular, it can be used to bind data to controls on a form. Therefore, in most cases, tables and views must be loaded before the LOAD event of a form set is executed. Thus, the OpenTables method of the data environment is, by default, called before the Load event of the form set is executed.



WORKAROUND
If you do not want the tables or views to be opened when the Load event of a form set is executed, set the AutoOpenTables property of the form to .F.. You can then call the OpenTables method of the data environment to open the tables automatically. For example, use the following command in any method of the form: THISFORMSET.DataEnvironment.Opentables



STATUS
This behavior is by design.



MORE INFORMATION
Following is the sequence of events that are executed when a form set created in Visual FoxPro version 3.0 is loaded or unloaded. The order of events might differ if the form is converted from a FoxPro version 2.x screen. In this example, the form set is named FORMSET1 and contains a form named FORM1 and a data environment called DATAENVIRONMENT. This list was generated by executing the following code for the following events and methods: ACTIVATE SCREEN ?PROGRAM

FORMSET1.LOAD .DATAENVIRONMENT.OPENTABLES .DATAENVIRONMENT.BEFOREOPENTABLES FORMSET1.FORM1.LOAD FORMSET1.DATAENVIRONMENT.INIT FORMSET1.FORM1.INIT FORMSET1.INIT FORMSET1.SHOW FORMSET1.ACTIVATE FORMSET1.FORM1.ACTIVATE FORMSET1.FORM1.GOTFOCUS FORMSET1.FORM1.QUERYUNLOAD FORMSET1.DESTROY FORMSET1.FORM1.DESTROY FORMSET1.FORM1.UNLOAD FORMSET1.UNLOAD FORMSET1.DATAENVIRONMENT.CLOSETABLES FORMSET1.DATAENVIRONMENT.AFTERCLOSETABLES FORMSET1.DATAENVIRONMENT.DESTROY NOTE: The OPENTABLES method calls the BEFOREPOPENTABLES event before the tables are actually opened. However, the code in the event handler is executed before the tables are opened, and this is the reason why OPENTABLES prints before BEFOREOPENTABLES prints.

For more information about the sequence of events that are triggered when a form runs, execute the sample program called EVENTS.SCX located in the SAMPLES\CONTROLS\EVENTS directory.

Additional query words: VFoxWin

Keywords: KB129571

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.