[Tkinter] Not getting entry values on button click & treeview not updating ?

[Yoriz]

In answer to your questions:

1. The lambda is set to the the values of the entry's at the time the lambda is created.
   It would be better to add a function that is called when the button is clicked,
   it reads the values of the entry's and then calls adding_records with the current values.
   
   
2. The records are added to the database but the treeview has not not been given a way to show the updates.
   Either add the new items or clearing the treeview and calling viewing_records()