如何通过InsertDBRow在Infragistics UltraWebGrid中插入数据

I'd like to add rows to an UltraWebGrid directly on the grid, which is connected to an ObjectDataSource. According to the documentation, I'm supposed to use the InsertDBRow method (there are also UpdateDBRow and DeleteDBRow) to handle database persistence. I'd like to add rows to an UltraWebGrid directl