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- Binding between a control and a WLanguage variable or between a control and a data file item
- Updating the items: Special cases
PageToFile (Function) In french: PageVersFichier
 Not available with this kind of connection
Automatically updates: - the value of the items in a data file with the value of the controls in the page. The data file items bound to the page controls are automatically updated with the values of these controls.
- the value of the WLanguage variables with the value of the page controls. The WLanguage variables bound to the page controls are automatically updated with the values of these controls.
This operation is performed regardless of the state of the controls (grayed, inactive or invisible). Remarks: - PageToFile cannot be used to write to the data file: the variables of the data file items can only be updated (i.e variables of the record loaded in memory). To modify the records, use HAdd, HModify, HWrite, etc.
 Only the binding to the data file items is supported. Bindings to WLanguage variables are not supported in this version.
PageToFile()
HAdd(Customer)
IF HErrorDuplicates() = True THEN Error("This number already exists")
Syntax
PageToFile([<Page> [, <Source>]])
<Page>: Page name Name of the page that contains the controls.
If this parameter is not specified or is an empty string (""), the page that contains the current code is used.
<Source>: Optional character string Name of the source containing the data to update. This source can be:- The name of a data file: only the controls bound to the items of the data file are taken into account.
- The name of a WLanguage variable: only the controls bound to the WLanguage variable are taken into account.
Remarks: - If the name of the variable is enclosed in quotes, the control will be bound to the specified variable.
- If the name of the variable is not enclosed in quotes, the control will be bound to the variable data (e.g., a variable containing the name of another variable).
If this name is not specified, all the page controls bound to a data file item described in the data model editor or to a WLanguage variable will be taken into account. Remarks Binding between a control and a WLanguage variable or between a control and a data file item The binding between a control and a WLanguage variable or between a control and a data file item can be determined: - In the editor, in the control description window ("Binding" tab)
- Programmatically, with the DataBinding property.
Updating the items: Special cases - To automatically assign the NULL value to an item with PageToFile:
- Check "Support NULL values" in the data file description.
- Check "Allow NULL values" for the item in the data model editor.
- Check "Return NULL if empty" in the "Details" tab of the Edit control bound to the item.
- The items of the data file that are not bound to a control are not updated by PageToFile.
- If multiple controls in the window or page are bound to the same data file item, PageToFile may not update the bound item properly. It is not recommended to bind multiple controls of a window or page to the same item.
- PageToFile does not update the items with the values from Image controls. Use the HLinkMemo function.
- PageToFile is not available on views.
- Binding with "Secure Password" items: The value of the "Password" item cannot be modified until the user changes the value in the control bound to the item.
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