Need C++ project assistance -- 2

It's an application, work related ui and storing the values into db .[login to view URL] specific I have dialogpage where I have is field and one grid which takes 3 fields name, as shown in the picture. So we can add multiple rows in to the grid each row will create a db object and getting stored. Currently I am bale to store one row into the db. Multiple rows are not getting soteed and I need some help in retriving from db and displying it on ui . I am very new to c++ somehow I completed half of the work . Looking for some help