Undoes any changes made to a row since the last fetch or Update.

  
      HRESULT Undo(   
   DBCOUNTITEM* pcRows = NULL,   
   HROW* phRow = NULL,   
   DBROWSTATUS* pStatus = NULL    
) throw( );  

pcRows
[out] A pointer to the location where Undo returns the number of rows it attempted to undo if required.

phRow
[out] A pointer to the location where Undo returns an array of handles to all rows it attempted to undo if required.

pStatus
[out] A pointer to the location where Undo returns the row status value. No status is returned if pStatus is null.

A standard HRESULT.

This method requires the optional interface IRowsetUpdate, which might not be supported on all providers; if this is the case, the method returns E_NOINTERFACE. You must also set DBPROP_IRowsetUpdate to VARIANT_TRUE before calling Open on the table or command containing the rowset.

Header: atldbcli.h

CRowset Class
IRowsetUpdate::Undo