TableAdd (Function)

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Use conditions
Characteristics of a row
Position of added row
Limits: Maximum number of rows displayed
Various
Adding rows
Cascading input
Browsing Table or TreeView Table control: Modifications in the linked data file
Browsing Table or TreeView Table control: Adding several rows
Adding a record into a browsing Table control and releasing a trigger
Browsing Table or TreeView Table control in edit
Adding images

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TableAdd (Function)

In french: TableAjoute

Adds a row into:

a Table control,
a TreeView Table control,
a Combo Box control "with table" (Table control displayed in a Combo Box control).

Note: It is recommended to use TableAddLine. TableAddLine is used to add:

TAB characters into the columns,
all types of values into the columns.

Example

// Add "Moore", "Vince" and "06/21/72"
// at the end of the "TABLE_CustomerTable" control
ResAdd = TableAdd(TABLE_CustomerTable, "Moore" + TAB + "Vince" + TAB + "06/21/72")

Syntax

<Result> = TableAdd(<Table control> [, <Row>])

<Result>: Boolean

True if the element was added,
False otherwise.

<Table control>: Control name

Name of control to use. This control can correspond to:
a Table control.
a TreeView Table control.
a Combo Box control with table.
If this parameter corresponds to an empty string (""), the control to which the current event belongs will be used.

<Row>: Optional character string

Row to add. This row has the following format:

<Element of column 1> + TAB + <Element of column 2> + TAB + ...

If this parameter is not specified, an empty row is added into the control. For a browsing control, the default values defined in the linked data file are taken into account.

Remarks

Use conditions

TableAdd can be used on:

a browsing or memory control,
a single-selection or multiselection control.

Characteristics of a row

Each added element is converted into the type of the relevant column.
To specify no value for an element, use an empty string ("") or 0 (according to the type of column). For example:

TableAdd(TABLE_CustomerTable, "Moore" + TAB + "Vince" + TAB + "" + TAB + "06/21/72")
If an element corresponds to the calculation result, the numeric expression must be enclosed in brackets. For example:

TableAdd(TABLE_CalcTable, (53+29) + TAB + (83-21))

Position of added row

By default, the row is added at the end of the rows displayed by the control.

Special case:

If the control is sorted by TableSort, the added row is positioned in the control according to the current sort.
If the control is sorted by the user, the sort is ignored when inserting the row. The row is added at the end of control.

Limits: Maximum number of rows displayed

The maximum number of rows that can be displayed in a Table or TreeView Table control is limited by the amount of available memory (theoretical maximum: 2 billion rows).

However, we do not advise you to use large Table or TreeView Table controls for performance and user-friendliness reasons (time required to fill the control for example).

Various

To add a row at a specific position in a Table or TreeView Table control, use TableInsertLine.
If the added row is the first row of the control, the added row becomes the current row.

Adding rows

..NewLine is used to find out whether the current row was just created by TableAdd (..NewLine = True).

Cascading input

To perform a cascading input, TableAdd must be used in the event "Exit from a row" of the Table control:

IF TABLE_CustomerTable..NewLine THEN
TableAdd(TABLE_CustomerTable)
END

Browsing Table or TreeView Table control: Modifications in the linked data file

If the cascading input is enabled, the data file linked to the control is automatically modified when the user goes to the next row.
If the cascading input is not enabled, the data file linked to the control is not modified. To write the content of the row added in the linked data file, TableSave must be used after TableAdd.

Notes:

The "Cascading input (Addition)" option can be selected in the "Details" tab of the control description.
The cascading input is not available for the browsing Table controls with direct access. This option is available for the memory Table controls and for the browsing Table controls loaded in memory.

Browsing Table or TreeView Table control: Adding several rows

A virtual row is created in the control whenever TableAdd is called in a browsing Table or TreeView Table control. The information will be saved in the linked data file only when TableSave is called.

If TableAdd is successively called in the same process without being followed by TableSave, only the FIRST call is effective (the following calls are ignored). A single row is added into the browsing Table or TreeView Table control.

Adding a record into a browsing Table control and releasing a trigger

You have the ability to release a trigger when a record is added into a browsing Table control. See the documentation about HDescribeTrigger for more details.

Browsing Table or TreeView Table control in edit

If TableAdd is called:

In a control event, the cursor is automatically positioned on the first column to edit in the added row.
In an event that does not belong to the control, (or in another process) ReturnToCapture must be used to resume the input in the Table or TreeView Table control.

Adding images

To add an image into a Table or TreeView Table control:

specify the name and full path of image to add.
For example:

TableAdd(TABLE_MyTable, "C:\MyDocuments\MyImage.BMP")

Note: The column must be an Image column otherwise the added image will not be displayed properly.

Component : wd240obj.dll