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Microsoft KB Archive/170119

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Knowledge Base


DOC: New Record Not Inserted to the End of Recordset

Article ID: 170119

Article Last Modified on 11/21/2006



APPLIES TO

  • Microsoft Foundation Class Library 4.2, when used with:
    • Microsoft Visual C++ 4.2 Enterprise Edition
    • Microsoft Visual C++ 4.2 Professional Edition
    • Microsoft Visual C++ 5.0 Enterprise Edition
    • Microsoft Visual C++ 5.0 Professional Edition



This article was previously published under Q170119

SUMMARY

The MFC documentation for CDaoRecordset::AddNew() and the DAO SDK documentation for the AddNew method state:

The position of the record depends on the type of Recordset:

In a dynaset-type Recordset object, records are inserted at the end of the recordset, regardless of any sorting or ordering rules that may have been in effect when the recordset was opened.


The documentation is incorrect. Beginning with Jet 3.0, this behavior is not guaranteed. The behavior was changed to improve performance as well as concurrency issues.

To demonstrate the change in behavior, delete a record in a recordset of 300+ records and then call AddNew(). Then, traverse the recordset until you see where the record has been added. Typically this record will be inserted in the 253rd record rather than at the end of the recordset.

MORE INFORMATION

If the goal is to make the newly added record the current record, you should get the bookmark of the last modified record and move to that bookmark.

This documentation was corrected in Visual C++ version 6.0 for Windows.

Keywords: kbdatabase kbdocerr kbdocfix KB170119