user can't notice that his adding is failed obviously unless he check the bottom of the data.
we can have a pop up window when the adding is failed.
or, we can select the new data (i mean, now you can remove it by the buttons above) after user add it.
user can't notice that his adding is failed obviously unless he check the bottom of the data.
we can have a pop up window when the adding is failed. or, we can select the new data (i mean, now you can remove it by the buttons above) after user add it.