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  • List Box controls containing more than 10 000 elements
  • Visibility/Invisibility of elements in a List Box or Combo Box control
  • Customizing the elements found in a List Box or Combo Box control
  • Sorted/Unsorted List Box control
  • Tabulations: Multi-selection List Box control
  • Adding an element onto the browser
  • Miscellaneous
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
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WINDEV Mobile
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Stored procedures
Inserts an element into a memory List Box control, a memory ListView control or a memory Combo Box control.
Remarks:
  • To add an element at the end of List Box (or Combo Box) control, use <List Box>.Add.
  • <List Box>.Insert can be used on single-selection and multi-selection List Box controls
  • To manage the contents of a Combo Box control in a container table column, use the Content property.
WEBDEV - Browser code Caution: The element will only be added to the page displayed in the browser. For more details, see Remarks.
Versions 15 and later
Android This function is now available for Android applications.
New in version 15
Android This function is now available for Android applications.
Android This function is now available for Android applications.
Versions 16 and later
WINDEVLinux This function is now available for WINDEV applications in Linux.
New in version 16
WINDEVLinux This function is now available for WINDEV applications in Linux.
WINDEVLinux This function is now available for WINDEV applications in Linux.
Versions 17 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad applications.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
// Add "Clark" in 4th position to "LIST_CustomerList"
LIST_CustomerList.Insert("Clark", 4)
WINDEVReports and QueriesUser code (UMC)
// Add the "C:\MyImages\CoralReef.JPG" image in 5th position to "LSV_Diving"
// The caption of this image will be "Nice coral"
LSV_Diving.Insert("Coral Reef", "C:\MyImages\CoralReef.JPG", 4)
Syntax
<Result> = <List Box control>.Insert(<Element> [, <Image> [, <Element index>]])
<Result>: Boolean
  • True if the element was inserted,
  • False otherwise.
WEBDEV - Browser codePHP <List Box>.Insert returns no result.
<List Box control>: Control name
Name of memory List Box or memory Combo Box control to use.
<Element>: Character string
Element that must be inserted into the specified memory List Box (or Combo Box) control.
This parameter can contain:
  • Carriage Return characters (CR) to add several rows. In this case:
    • if <Element index> is not specified, the elements are added.
    • If <Element index> is specified, only the first element will be added.
  • tabs (TAB) to obtain a multi-element List Box control (see Notes).
WINDEVJava For a ListView control, this parameter corresponds to the image caption. This parameter can contain Carriage Return characters (CR) to add several elements. In this case:
  • if <Image> and <Element index> are not specified, the added elements will be associated with the default image (defined in the "Details" tab of the control description window).
  • if <Image> and <Element index> are specified, only the first element will be added. This element will be associated with the default image (defined in the "Details" tab of the description window of control).
  • if <Image> is specified and if <Element index> is not specified, only the first element will be added. This element will be associated with the specified image.
WEBDEV - Server codeWEBDEV - Browser codeAndroidJavaPHP 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).
<Image>: Optional character string
Name and path of image that will be added into a ListView control. This parameter is taken into account for ListView controls displayed in ListView mode only. If this parameter is not specified, the default image (defined in the "Details" tab in the description window of control) will be used.
WEBDEV - Server codeWEBDEV - Browser codeUniversal Windows 10 AppAndroidiPhone/iPadPHP This parameter is not available.
<Element index>: Optional integer
Index of the element to be inserted.
If this parameter:
  • is not specified, the element is inserted:
    • before the current element in a single-selection List Box control. If there is no current element, the element is inserted at the end of the memory List Box (or Combo Box) control.
    • at the end of the List Box (or Combo Box) control in a multi-selection List Box control.
  • is greater than the number of elements found in the List Box (or Combo Box) control, the element is inserted at the end of the memory List Box (or Combo Box) control. The number of elements found in a List Box (or Combo Box) control is returned by <List Box>.Count.
  • is equal to 0, the element is added at the beginning of memory List Box (or Combo Box) control.
Remarks

List Box controls containing more than 10 000 elements

The maximum number of elements found in a List Box control is limited by the available memory (theoretical maximum: 2 billion rows). Nevertheless, filling a List Box control with an important number of elements (more than 10 000) affects performance.
To add a large number of elements to a List Box control, we recommend you use a browsing List Box control (that is a List Box control directly linked to an HFSQL data file).
WINDEVWEBDEV - Server codeReports and QueriesAndroidiPhone/iPadJavaUser code (UMC)PHPAjax

Visibility/Invisibility of elements in a List Box or Combo Box control

To make an element invisible in a List Box or Combo Box control, use gStoredValue.
WINDEVReports and QueriesUser code (UMC)

Customizing the elements found in a List Box or Combo Box control

To customize the elements found in a List Box or Combo Box control (background color, image, drawing, ...), use the Graphic strings management functions.
WINDEVWEBDEV - Server codeWEBDEV - Browser codeReports and QueriesUniversal Windows 10 AppAndroidiPhone/iPadJavaUser code (UMC)Ajax

Sorted/Unsorted List Box control

  • If the List Box control is sorted, the new element is inserted at the current position without sorting the list box.
  • If the List Box control is not sorted, the new element is added:
    • at <Element index> if <Element index> is specified.
    • before the current element in a single-selection List Box control if the <Element index> parameter is not specified. If there is no current element, the element is inserted at the end of the memory List Box (or Combo Box) control.
    • at the end of the List Box (or Combo Box) control in a multi-selection List Box control if the <Element index> parameter is not specified.
The type of the List Box control (sorted or not) is selected during the control description ("Details" tab).
Use <List Box>.Add rather than <List Box>.Insert to add an element to a sorted List Box control.
WEBDEV - Browser code The element is added at the end of control, no matter whether the List Box control is sorted or not.
WINDEVReports and QueriesUser code (UMC)

Tabulations: Multi-selection List Box control

To manage the tabulations in a List Box control (alignment of columns), use the TAB constant. For example:
LIST_Customer.Insert(LastName + TAB + FirstName)
In this example, all the first names start at the same position and are aligned one under the other.
Remark: The first call to <List Box>.Insert defines the position of tabulations. These positions will be taken as reference for all values added thereafter. Similarly, if values have been typed entered in the editor, the positions of these values are taken as reference. During the first call to <List Box>.Insert, we advise you to define the width of columns with Complete. For example, to fix the width of columns found in "LIST_Customer" to 10 characters:
LIST_Customer.Insert(Complete(LastName, 10) + TAB + Complete(FirstName, 10))
WEBDEV - Browser code

Adding an element onto the browser

When adding an element in browser code, this element is added to the page displayed in the browser only. In order for this element to be added onto the server, <List Box>.Insert must be run on the server.
Calling <List Box>.Insert 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>.Insert to automatic AJAX mode. That's it! No additional programming is required. For more details, see AJAX.

Miscellaneous

  • To insert an element into a Table control, use TableInsert.
  • <List Box>.Insert can be used on a "Combo Box" column in a Table control .
Component: wd270obj.dll
Minimum version required
  • Version 23
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