Database Form Events

The Events tab page, allows you to assign a macro to certain events which occur in a database form.

यो आदेश पहुँच गर्न...

Open context menu of a selected form element - choose Form Properties - Events tab.

Open Form Design toolbar, click Form Properties icon - Events tab.

एउटा घटनालाई एउटा म्याक्रो सँग लिङ्क गर्नका लागि,घटना घट्ने बेलामा कार्यान्वयन हुनका लागि सबै आदेशहरू समाविष्ट एउटा म्याक्रो लेख्नुहोस। त्यसपछि यो म्याक्रोलाई सम्बन्धित घटना सँग सम्बन्धित घटनाको पछाडि... मा क्लिक गरेर मानाङ्कन गर्नुहोस। म्याक्रो मानाङ्कन गर्नुहोस संवाद खुल्दछ,जहाँ तपाईँंले म्याक्रो चयन गर्न सक्नुहुन्छ।

निम्न क्रियाहरू एकल तरीकाले कन्फिगर गर्न सकिन्छ, अर्थ दिदै तपाईँंले तपाईँंको आफ्नो संवादहरू एउटा क्रिया चित्रित गर्नका लागि प्रयोग गर्नुहोस:

त्रुटि सन्देश प्रदर्शन,
मेट्ने प्रक्रिया यकीन (डेटा रेकर्डहरूका लागि),
परामितिहरू क्वेरी गर्दा,
एउटा डेटा रेकर्ड बचत गरिरहेको बेलामा आगत जाँच गर्दा

उदाहरणका लागि,तपाईँंले एउटा "confirm deletion" अनुरोध प्रकाशन गर्न सक्नुहुन्छ जस्तै "Really delete customer xyz?" जब डेटा रेकर्ड मेटिन्छ।

The events that are shown in the Events dialog cannot be edited directly. You can remove an event from the list by pressing the Del key.

निम्न सूचीहरू र एउटा फारममा सबै घटनाहरू वर्णन गर्दछ जुन एउटा म्याक्रोमा लिङ्क गर्न सकिन्छ:

अद्यावधिक भन्दा पहिले

The Before update event occurs before the control content changed by the user is written into the data source. The linked macro can, for example, prevent this action by returning FALSE.

अद्यावधिक पछि

The After update event occurs after the control content changed by the user has been written into the data source.

रिसेटलाई प्राथमिकता

The Prior to reset event occurs before a form is reset. Returning True approves the reset, returning False cancels the operation.

यदि निम्न मध्ये कुनै एक अवस्था भेटिएमा एउटा फारम रिसेट गरिन्छ:

प्रयोगकर्ताले एउटा (HTML) बटन थिच्दछ जुन एउटा रिसेट बटनको रूपमा परिभाषित गरिएको हुन्छ।
एउटा नयाँ र खाली रेकर्ड फारममा सिर्जना गरियो जुन डेटास्रोतमा लिङ्क गरिएको हुन्छ। उदाहरणका लागि, अन्तिम रेकर्डमा,नयाँ रेकर्ड बटन थिच्न सकिन्छ।

रिसेट गरिसकेपछि

The After resetting event occurs after a form has been reset.

अनलोड हुँदा

The When unloading event occurs directly after the form has been unloaded; that is, separated from its data source.

अनलोड हुनु भन्दा पहिले

The Before unloading event occurs before the form is unloaded; that is, separated from its data source.

त्रुटि घटित भयो

The Error occurred event is activated if an error occurs when accessing the data source. This applies to forms, list boxes and combo boxes.

परामितिहरू भर्नुहोस

The Fill parameters event occurs when the form to be loaded has parameters that must be filled out. For example, the data source of the form can be the following SQL command:

SELECT * FROM address WHERE name=:name

Here :name is a parameter that must be filled out when loading. The parameter is automatically filled out from the parent form if possible. If the parameter cannot be filled out, this event is called and a linked macro can fill out the parameter. Return True when the execution of the parametrized statement should continue, False otherwise.

पेश गर्नुभन्दा पहिले

The Before submitting event occurs before the form data is sent. Returning True approves the submission, False stops it.

मेटाइ यकीन गर्नुहोस

The Confirm deletion event occurs as soon as data has been deleted from the form. Return True to allow row deletion, False otherwise. For example, the linked macro can request confirmation in a dialog.

रेकर्ड क्रिया पछि

The After record action event occurs directly after the current record has been changed.

रेकर्ड क्रिया भन्दा पहिले

The Before record action event occurs before the current record or record set are changed. Return True when changing is allowed, otherwise False. For example, the linked macro can request confirmation in a dialog.

रेकर्ड परिवर्तन पछि

The After record change event occurs directly after the current record pointer has been changed.

रेकर्ड परिवर्तन पहिले

The Before record change event occurs before the current record pointer - SQL cursor - is changed. Return True when moving is allowed, otherwise False.

लोड गर्दा

The When loading event occurs directly after the form has been loaded.

लोड हुँदा

The When reloading event occurs directly after the form has been reloaded. The data content has already been refreshed.

लोड हुनु भन्दा पहिले

The Before reloading event occurs before the form is reloaded. The data content has not yet been refreshed.

Vetoable events

Macros can interrupt event execution when they return a boolean value: True allows the execution of the event to continue and False stops the event execution.

The following events are interruptable by returning False:

Before record action
Before record change
Before submitting
Before update
Fill parameters