With the introduction of the Boolean data type in VB4, you might be tempted to convert it to a numeric value using the Val function for storage in a database
When dealing with numerics and strings, be advised of a couple “gotchas.” The Val() function isn’t internationally aware and will cause problems if you have users overseas. But you can’t
Instead of using an If construct to set a Boolean variable, you can assign a Boolean variable to the result of any logical comparison. For example, instead of this code:
Use the Count property to determine exactly how many controls are loaded. You can also use the For Each loop to perform code on each control. For instance, if you
Don’t overlook the UNION keyword in SQL as a way to simplify selections from multiple tables. For instance, to select the customer with the highest sales from three tables with
Want to see a list of the developers who worked on VB5 and VB6? Try this: From VB’s View menu, select Toolbars, then Customize…. In the resulting dialog, click on
Don’t put rules for validating text values or formats in the KeyPress event-use the Change event instead. If you “paste” into a text box, the KeyPress event isn’t fired and