Lines Between Columns and Rows 
You can define whether lines between columns and rows are to be shown or hidden in the ALV output. You can choose from the following variants:
Lines only between columns
Lines only between rows
Lines between columns and rows
No lines
To do this, you use the methods of interface class IF_SALV_WD_TABLE_SETTINGS (implementing class CL_SALV_WD_CONFIG_TABLE).
Methods for showing grid lines
Function | Method |
Show or hide lines | SET_GRID_MODE |
Check which lines are shown | GET_GRID_MODE |