how to show my sqlite database table on mainwindow with tableview widget

[anda_skoa]

And now i want to display the table in my mainwindow tableview....
Everything is ok but table is not displaying on the window...and no errors are comming...but when i clicked the submit button i got the error as shown in fig.

Your QSqlTableModel does not have a database connection to work with, see second constructor argument.
Also the given table name is wrong (your table is not called "library data", just "library").

Cheers,
_

P.S.: A Sqlite database is a single file, you don't need username or password for that.