We tackled a lot in this chapter. You should feel pretty comfortable now with how Visual Basic .NET works with databases. Still, we've only scratched the surface on some issues. For example, there are many additional features available for use with the DataGrid control that we simply don't have space to discuss. However, digging around in the online help and checking in on the Microsoft Web site can also be useful.
You really do need to experiment with the programs presented in this chapter. For example, we hard-coded a lot of variables into the sample programs (for example, some of the SQL statements). You could change these into program variables taken from input text boxes and use them to replace the string literals. Just make sure that you use a copy of a database just in case you modify it in a way that you may not want to make permanent. Don't be afraid of making changes. Nothing's going to go up in flames or at least I don't think it will.