<List Box>.Modify (Function)

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Multiselection List Box control
Modified element
Modifying an element in the browser
Miscellaneous

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<List Box>.Modify (Function)

In french: <Liste>.Modifie

Modifies an element in a memory List Box control (standard List Box or ListView) or in a memory Combo Box control.

Remark: <List Box>.Modify can be used on the single-selection and multiselection List Box controls.

Caution: The element will be modified on the page displayed in the browser only. For more details, see Remarks.

Versions 16 and later

This function is now available for WINDEV applications in Linux.

New in version 16

This function is now available for WINDEV applications in Linux.

Example

// Modify the element found at subscript 4 in "LIST_CustomerList"
LIST_CustomerList.Modify("Smith", 4)

Syntax

<List Box control>.Modify(<Element> [, <Element subscript>])

<List Box control>: Control name

<Element>: Character string (with quotes)

Element to modify in the specified List Box (or Combo Box) control.
The Carriage Return characters (CR) and the tabulations (TAB) are not supported.
To add several consecutive spaces, non-breakable space characters must be used: Charact(160).

<Element subscript>: Optional integer

Subscript of element to modify.
If this parameter:
is not specified or if it is set to -1, the current element is modified. <List Box>.Modify has no effect if there is no current element.
is equal to 0, the first element is modified.
is greater than the number of elements found in the List Box (or Combo Box) control, a WLanguage error occurs. The number of elements found in a List Box (or Combo Box) control is returned by <List Box>.Count.
<List Box>.Modify has no effect if this parameter is equal to 0 or if it is greater than the number of elements found in the List Box (or Combo Box) control.

Remarks

Multiselection List Box control

If one or more elements are selected in the List Box control, <List Box>.Modify deselects no element.

Modified element

When modifying an element containing an invisible value (specified by gLink), gLink must be re-used. Otherwise, this invisible value will be lost during the modification.

For example:

adding "MyElement":

COMBO_MyCombo.Add("MyElement" + gLink("1"))
modifying "MyElement":

COMBO_MyCombo.Modify("MyNewElement" + gLink("1"))

Modifying an element in the browser

When modifying an element in browser code, this element is modified only for the page displayed in the browser. In order for this element to be modified on the server, <List Box>.Modify must be run on the server.

Calling <List Box>.Modify in browser code is useful when using AJAX technology, in "Programmed AJAX" mode (via AJAXExecute or AJAXExecuteAsynchronous).

Reminder: In "Automatic and immediate AJAX" mode, all you have to do is switch the server process containing <List Box>.Modify to automatic AJAX mode. That's it! No additional programming is required. For more details, see AJAX.

Miscellaneous

To modify an element in a Table control, use <Table>.Modify.
<List Box>.Modify can be used on a "Combo Box" table column.

Component: wd260obj.dll