Builder will automatically generate insert, update, and delete command, provided that you select a primary key in your select query.
I have faced a very common problem of cross thread exception.
Replace the code in your Form1 with the following code and then change the namespace to the name of your project.
How to repeat: Create a new C# project (here called "Bug2").
Run it, edit a few cells, close and re-open the app.
It is controling the Binding Source but does not actually transfer data back and forth. Meaning, any interaction with the data from your controls goes through the Binding Source, which in turn communicates with your data source.
For example, say that your Data Grid View is initially filled with some data.