PC SOFT

ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Home | Sign in | English EN

  • Use conditions
  • Deleting records in a Table or TreeView Table control based on a data file
  • Referential integrity and Table or TreeView Table controls based on a data file
  • Deleting records in a Table control based on a data file and Trigger
  • Handling errors
  • Locking the linked data file
  • Deleting records in a Table control populated programmatically with a "Contains" filter
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Others
Stored procedures
Deletes a row from:
  • a Table control,
  • a TreeView Table control,
Example
// Delete row #5 from the "TABLE_Product" control
TableDelete(TABLE_Product, 5)
// Delete all selected rows from a Table control
// TableDeleteSelect is available from version 18
i is int
NbSelection is int = TableSelectCount(TABLE_MyTable)
FOR i = NbSelection TO 1 STEP -1
TableDelete(TABLE_MyTable, TableSelect(TABLE_MyTable, i))
END
Syntax
TableDelete(<Table control> [, <Index>])
<Table control>: Control name
Name of the control to be used. This control can correspond to:
  • a Table control.
  • a TreeView Table control.
If this parameter corresponds to an empty string (""), the Table control to which the current event belongs will be used.
<Index>: Optional integer
Index of the row to delete.
If this parameter is not specified, the selected rows are deleted. If this parameter is not specified and if no row is selected, TableDelete has no effect.
Remarks

Use conditions

TableDelete can be used on:
  • a Table or TreeView Table control based on a data file.
  • a Table or TreeView Table control populated programmatically.
  • a single-selection or multi-selection control.

Deleting records in a Table or TreeView Table control based on a data file

TableDelete deletes the corresponding record from the data file associated with the control. If items are linked to other data files, no modification is automatically performed on these linked data files.

Referential integrity and Table or TreeView Table controls based on a data file

If the management of referential integrity is enabled (HSetIntegrity), HErrorIntegrity must be called after TableDelete to check the integrity.
If an integrity error is detected, the row is not deleted and it remains visible in the control.

Deleting records in a Table control based on a data file and Trigger

You have the ability to activate a trigger when deleting a record from a Table control based on a data file. For more details, see the documentation about HDescribeTrigger.

Handling errors

The ErrorOccurred variable is set to True if the deletion fails. To get the details of the error, use ErrorInfo.
Example of error cases: Attempt to delete a row whose index corresponds to a row not selected in the visible part of the Table control.

Locking the linked data file

If the data file is locked in the current process, TableDelete deletes the specified row and unlocks the data file.

Deleting records in a Table control populated programmatically with a "Contains" filter

When used on a Table control populated programmatically with a "Contains" filter, TableDelete displays the records that do not match the filter. The filters defined by the AAFs (Automatic Application Features) are canceled.
Component: wd270obj.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
Click [Add] to post a comment