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  • List control with more than 10,000 elements
  • Visibility/Invisibility of elements in a List Box or Combo Box control
  • Sorted/Unsorted List Box control
  • Miscellaneous
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Stored procedures
Inserts an element into a List Box, ListView or Combo Box control populated programmatically.
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 column of a Table control, use the Content property.
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 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)
Syntax
<Result> = <List Box control>.Insert(<Element> [, <Image> [, <Element index>]])
<Result>: Boolean
  • True if the element was inserted,
  • False otherwise.
<List Box control>: Control name
Name of List Box or Combo Box control populated programmatically.
<Element>: Character string
Element that must be inserted into the specified List Box (or Combo Box) control populated programmatically.
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).
Android The Carriage Return characters (CR) and the tabulations (TAB) are not supported.
<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.
Universal Windows 10 AppAndroidiPhone/iPad 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 last position in the List Box (or Combo Box) control populated programmatically.
    • at the last position in the List Box (or Combo Box) control populated programmatically, in a multi-selection List Box control.
  • is greater than the number of elements in the List Box (or Combo Box) control, the element is inserted at the last position in the List Box (or Combo Box) control populated programmatically. The number of elements in a List Box (or Combo Box) control is returned by <List Box>.Count.
  • is equal to 0, the element is added at the first position in the List Box (or Combo Box) control populated programmatically.
Remarks

List control with more than 10,000 elements

The maximum number of elements in a List Box control is only limited by the available memory (theoretical maximum: 2 billion rows). Nevertheless, populating a List Box control with a large number of elements (more than 10,000) affects performance.
To add a large number of elements, it is recommended to use a List Box control based on an HFSQL data file.
AndroidiPhone/iPad

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.
Universal Windows 10 AppAndroidiPhone/iPad

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 last position in the List Box (or Combo Box) control populated programmatically.
    • at the last position of the List Box (or Combo Box) control populated programmatically in a multi-selection List Box control, if the <Element index> 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.

Miscellaneous

  • To insert an element into a Table control, use <Table>.Insert.
  • <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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