How to set a record bookmark in ADO

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Var? BK: TBOOKMARK; begin? if adodsvresult.active and (adodsvresult.recordcount> 0) THEN? Begin ??? bk: = adodsvresult.getbookmark; ??? // Operating database here ???? if adodsvresult.bookmarkValid BK) THEN/ If the tag can match, find the record ????? adodsvresult.gotobookmark (bk); end; end;