Author: Tomas Rutkauskas 

Determining the record number in a dBASE/Paradox table

Answer:

The following procedure determines the physical number of the current record
in a dBase or Paradox table:

1   function FindRecordNumber(aDataSet: TDataSet): longint;
2   var
3     cP: CurProps;
4     rP: RECProps;
5     DBRes: DBiResult;
6   begin
7     {Return 0 if dataset is not Paradox or dBase}
8     Result := 0;
9   
10    with aDataset do
11    begin
12      if state = dsInactive then
13        exit;
14  
15      {we need to make this call to grab the cursor's iSeqNums}
16      DBRes := DBiGetCursorProps(Handle, cP);
17      if DBRes <> DBIERR_NONE then
18        exit;
19  
20      {synchronize the BDE cursor with the dataset's cursor}
21      UpdateCursorPos;
22  
23      {fill rP with the current record's properties}
24      DBRes := DBiGetRecord(Handle, DBiNOLOCK, nil, @rP);
25      if DBRes <> DBIERR_NONE then
26        exit;
27  
28      {what kind of dataset are we looking at?}
29      case cP.iSeqNums of
30        0: result := rP.iPhyRecNum; {dBase}
31        1: result := rP.iSeqNum; {Paradox}
32      end;
33    end;
34  end;