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  • Multiselection List Box control
  • Modified element
  • Modifying an element in the browser
  • Miscellaneous
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Stored procedures
Modifies an element in a memory List Box control (standard List Box or ListView) or in a memory Combo Box control.
Note: ListModify can be used on the single-selection and multiselection List Box controls.
WEBDEV - Browser code Caution: The element will be modified on the page displayed in the browser only. See Remarks for more details.
Versions 16 and later
Linux This function is now available for WINDEV applications in Linux.
New in version 16
Linux This function is now available for WINDEV applications in Linux.
Linux This function is now available for WINDEV applications in Linux.
Example
// Modify the element found at subscript 4 in "LIST_CustomerList"
ListModify(LIST_CustomerList, "Moore", 4)
Syntax
ListModify(<List Box control> , <Element> [, <Element subscript>])
<List Box control>: Control name
Name of control to use:
  • List Box control,
  • Combo Box control.If this parameter corresponds to an empty string (""), the element is modified in the List Box control (or Combo Box) to which the current event belongs.
WEBDEV - Browser code The name of List Box or Combo Box control to use must necessarily be specified.
<Element>: Character string (with quotes)
Element to modify in the specified List Box (or Combo Box) control.
WEBDEV - Server codeWEBDEV - Browser codePHP The Carriage Return characters (CR) and the tabulations (TAB) are not supported.
WEBDEV - Server code 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. ListModify 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 ListCount.
PHP ListModify 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, ListModify deselects no element.
WEBDEV - Server codeAjax

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":
    ListAdd(COMBO_MyCombo, "MyElement" + gLink("1"))
  • modifying "MyElement":
    ListModify(COMBO_MyCombo, "MyNewElement" + gLink("1"))
WEBDEV - Browser code

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, ListModify must be run on the server.
The call to ListModify in browser code is suitable when using the 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 ListModify to automatic AJAX mode. That's it! No additional programming is required. See AJAX for more details.

Miscellaneous

  • To modify an element in a Table control, use TableModify.
  • ListModify can be used on a "Combo Box" table column.
Component : wd240obj.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
Exemplo ListModify
ListModify(LIST_List,"Modificando Segundo",2)

// Blog com Video e Exemplo
http://windevdesenvolvimento.blogspot.com.br/2016/11/aula-963-curso-windev-listbox-008.html
https://www.youtube.com/watch?v=09j73FXGrjE



De matos
04 Dec. 2016