![]() ![]() This course is fully online, you require internet access and an email account. And since Windows applications are event-driven and everything in Visual Basic is treated as a programmable object, you'll learn about event-driven and object-oriented programming-concepts that are important not just in Visual Basic, but in other programming languages as well. You'll also see how to use Windows' large and varied library of controls and how to access files and handle errors. NET Framework, as well as how to write and use your own functions. You'll find out how to use the large function library built into Visual Basic, including the. Over the course of 12 lessons, you'll learn the building blocks of programming, including using variables to store data, control structures, and loops. It even writes all of the necessary code to get the application started for you, which you can then view and fine-tune. Instead, it enables you to create the application program and its components literally with the click of a button or menu item. But, as you'll see, the Visual Basic development environment relieves you of this task. In this course, you'll learn how to write Windows applications and programs using the Visual Basic programming language and the Visual Basic development environment.Ĭreating a Windows application ordinarily requires you to write lengthy and complex code. Why? Because it's easy to learn, and doesn't require you to memorize difficult commands like other programming languages. Just so you know, the debugger says that the null object is comp.Visual Basic is the most widely used programming language for creating Windows applications. I've looked through VB books, searched several forums, and everything that SHOULD work doesn't! Sorry for asking such a remedial question, but I just need to know. If ((Not (comp.Container Is DBNull.Value)) And (Not ( Is DBNull.Value))) Thenįor i As Integer = 0 To () Step 1 If ((Not IsNothing(comp.Container)) And (Not IsNothing())) Then If ((Not IsDBNull(comp.Container)) And (Not IsDBNull())) Then ![]() All I want to do is check if an object is null, but no matter what I do, if it compiles, it throws a NullReferenceException just trying to check! Here's what I've done: If ((Not (comp.Container Is Nothing)) And (Not ( Is Nothing))) Thenįor i As Integer = 0 To () - 1 Step 1įixUIIn((i), style) ![]()
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