ODBCIsBOF
Returns whether you have gone above the first record of the record set. (Call this function before scrolling from record to record.)
| Function
| Group
| Execution
| Windows
| Embedded
| Thin Client
| Mobile Access
|
| ODBCIsBOF | ODBC
| Synchronous
| Supported
| Not supported
| Executed on Server
| Not supported
|
Syntax
- numHandler
- The handler returned by the ODBCOpen function.
Returned value
| 0
| Record found
|
| non-zero
| Record set contains no records or you move backward, above the first record
|
You also can use this function along with the ODBCIsEOF function to determine whether the record set contains any records or is empty. Immediately after calling the ODBCQuery function, and if the record set contains no records, ODBCIsBOF returns non-zero. When you open a record set with at least one record, the first record is the current record and ODBCIsBOF returns a zero (0). If the first record is the current record, and you call ODBCMovePrev, ODBCIsBOF will subsequently return a non-zero.
Examples
| Tag Name
| Expression
|
| Tag
| ODBCIsBOF( 1 ) |
ODBCIsBOF
