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This class traps for data conflicts on buffered data.
| Category | Data Editing |
|---|---|
|
Default Catalog |
VisualВ FoxProВ Catalog\FoundationВ Classes\DataВ Query |
|
Class |
_datachecker |
|
Base Class |
Custom |
|
Class Library |
_datanav.vcx |
|
Parent Class |
_custom |
|
Sample |
...\Samples\Solution\Ffc\conflicts.scx |
Remarks
To use, drop the class on a project or form or, from the Component Gallery Item shortcut menu, select Add to Project or Add to Form. When you add the class to a form, you need to specify the appropriate property values. When you drop the class on a project, you can choose between adding the class or creating a subclass.
See Guidelines for Using Visual FoxPro Foundation Classes for more information on using foundation classes.
| Properties, Events, Methods | Description |
|---|---|
|
HandleRecord method |
Compares the current value, old value, and original value on disk of each field, displaying a message box if a change or conflict is detected.
Syntax:
Return:В nReturn Arguments: lnScope specifies the degree of validation: nReturn specifies the action taken: |
|
String method |
Called by the HandleRecord method, returns a character equivalent of the passed value. Returns only a notification for memo fields.
Syntax:
Return: none Arguments: luValue specifies the value to be checked. |
|
VerifyChanges method |
Prompts a user to save all changes made to a table or record.
Syntax:
Return: none Arguments: none |
|
VerifyEachChange method |
Prompts a user to confirm each change made.
Syntax:
Return: none Arguments: none |
|
CheckcConflicts method |
Notifies a user when data has changed after record editing started.
Syntax:
Return: none Arguments: none |