How to prevent multiple instances of an app running - Visual Basic tutorial

Category: Visual Basic tutorials > Basics - Difficulty:

Database controls are ideal if you want to get in, get the job done, and then get out. In this section we'll discuss the controls available to the database programmer. VB falls short, however, in helping beginners create databases from scratch.

Get User Name Of Logged On User

Declaring variables is a very fundamental requirement in programming and you cannot go anywhere without it. For those of us who came from previous versions of Visual Basic, .NET presents a new set of issues with our variables.

In previous lesson, we have programmed a CD player. Now, with some modifications, we will transform the CD player into an audio file player. This player will be created in such a way that it could search for wave and midi files in your drives and play them.

You see it in just about every Windows application, so how can you do it in your VB application? Fortunately VB provides built-in tools to make it easy for you. While the code you write to respond to a drag and drop operation can be fairly complex, the mechanics of a drag and drop operation are fairly simple and logical.