Language Reference Guide : 4. System Classes : TableField Class : Drop_Row Attribute
 
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Drop_Row Attribute
Data Type: integer
4GL Access: RW
During a drag-and-drop operation, the Drop_Row attribute is set to the row number on which the drop occurred. If the TableField is empty, the Drop_Row is set to 0. If the drop occurred on an empty row, Drop_Row is set to the LastRow + 1 of the TableField array.