In this chapter, we will get straight into writing code. The recipes chosen for this chapter are common tasks that will be used on many development projects.
As we progress through this chapter, references to code placement will be made. Code placement is critical to a maintainable and extendable solution. We will see that code can be written on the form, in a class, or in a table. The rule of thumb here is that we must place code as low in the stack as possible. If we write code on a form, that code is only available to that form and cannot be reused. This is fine when we are hiding a button, but data (validation and other data-specific code) logic usually belongs to a table. As the code on the form or table gets more complicated, the code should be moved to a class.
The SalesTable form and table is an example. In this case, table events...
