GetRowIdFromRow
method (DataWindows)
Description
Gets the unique row identifier of a row in a DataWindow control or
DataStore object from the row number associated with that row.
Applies to
|
DataWindow type |
Method applies to |
|---|---|
|
PowerBuilder |
DataWindow control, DataWindowChild object, DataStore |
Syntax
PowerBuilder
|
1 |
long dwcontrol.GetRowIdFromRow (long rownumber {, DWBuffer buffer } ) |
|
Argument |
Description |
|---|---|
|
dwcontrol |
A reference to a DataWindow control, DataStore, or |
|
rownumber |
A number specifying the row number for which you want |
|
buffer (optional) |
A value of the dwBuffer enumerated datatype |
Return value
Returns the row identifier in buffer. Returns 0 if the row
identifier is not in the current buffer and -1 if an error occurs.
If any argument value is null, in PowerBuilder and JavaScript the
method returns null.
Usage
The row identifier value is not the same as the row number value
used in many DataWindow and DataStore function calls and should not be
used for the row number value. Instead you should first convert the unique
row identifier into a row number by calling GetRowFromRowId.
Row identifiers
The row identifier is relative to the DataWindow that currently
owns the row.
Examples
This example retrieves the current row’s unique identifier:
|
1 2 |
long ll_rowid ll_rowid = dw_emp.GetRowIDFromRow(dw_emp.GetRow()) |
See also