| **Navigation:**  [[abc library reference.htm|ABC Library Reference]] > FileManager > FileManager Properties >====== HasAutoInc (Auto-increment operation active) ====== | [[filenamevalue constant filename .htm|{{btn_prev_n.gif|Previous page}}]][[abc library reference.htm|{{btn_home_n.gif|Return to chapter overview}}]][[lazyopen delay file open until access .htm|{{btn_next_n.gif|Next page}}]] | | || | | **HasAutoInc** | **BYTE, PROTECTED** | {{blk2blue.jpg|blk2blue.jpg}} The **HasAutoInc **property is used to indicate indicate that the pending file operation is using an auto increnmenting key. Basically this means that when adding a new record to the file an insert operation is first performed which increments the key element. As the form is completed, the record is written again. **Implementation:** The AddKey method sets the HasAutoInc property to True if the AUTO attribute is detected. **See Also:     **[[addkey set the file s keys .htm|AddKey]]