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Syntax for a single data item in a DataWindow – PB Docs 2021 – PowerBuilder Library

Syntax for a single data item in a DataWindow – PB Docs 2021

Syntax for
a single data item in a DataWindow

Description

A DataWindow data expression accesses a single data item when you
specify its row and column number.

Syntax

Parameter

Description

dwcontrol

The name of the DataWindow control or child
DataWindow in which you want to get or set data.

buffer

(optional)

The name of the buffer from which you want to get
or set data. Values are:

  • Primary — (Default) The data in the primary buffer
    (the data that has not been deleted or filtered
    out).

  • Delete — The data in the delete buffer (data
    deleted from the DataWindow control).

  • Filter — The data in the filter buffer (data that
    was filtered out).

datasource

(optional)

The source of the data. Values
are:

  • Current — (Default) The current values in the
    DataWindow control.

  • Original — The values that were initially retrieved
    from the database.

rownum

The row number of the desired item.

colnum

The column number of the desired
item.

The row and column numbers must be enclosed in
brackets and separated by commas.

Return value

The datatype of the expression is Any. The expression returns a
single item in the DataWindow control. Its datatype is the datatype of
the column.

Examples

These expressions both refer to a single item in row 1, column 2.
The expressions access current data in the primary buffer:

This statement changes the value of the original data to 0 for the
item in row 1, column 2 in the Filter buffer. Column 2 holds numeric
data:


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