Chapter 9: Methods for the DataWindow Control

SetSQLPreview

Specifies the SQL statement for a DataWindow control or DataStore that PocketBuilder is about to send to the database.

integer dwcontrol.SetSQLPreview ( string sqlsyntax )

Argument	Description
dwcontrol	A reference to a DataWindow control, DataStore, or child DataWindow.
sqlsyntax	A string whose value is valid SQL syntax for the SQL statement that will be submitted to the database server.

Returns 1 if it succeeds and 0 if an error occurs. If any argument’s value is NULL, the method returns NULL.

Use SetSQLPreview to modify syntax before you update the database with changes in the DataWindow object.

To obtain the current SQL statement in the SQLPreview event, look at the sqlsyntax argument.

When to call SetSQLPreview Call this method only in the script for the SQLPreview event.

This statement sets the current SQL string for the DataWindow dw_1:

dw_1.SetSQLPreview( &

		"INSERT INTO billings VALUES(100, " + &

		String(Current_balance) + ")")