By Matthew MacDonald
Seasoned .NET 2.0 home windows types and customized Controls in VB 2005 is the VB 2005 model of the author's best-selling and highly-reviewed professional .NET 2.0 home windows kinds and customized Controls in C#. well known writer Matthew MacDonald indicates you VB 2005 programmers find out how to layout versatile, hassle-free home windows interfaces. and you can examine the simplest practices and layout assistance for coding those consumer interfaces.Although this ebook isn't a reference handbook, it comprises certain discussions approximately person interface components that you're going to use regularly. you are going to discover ways to use .NET controls in addition to to increase these .NET controls along with your personal customized controls.
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Extra info for Pro .NET 2.0 Windows Forms and Custom Controls in VB 2005
These approaches are discussed in the next two sections. Overriding Methods In order to override a method, you need to create a custom inherited control. For example, imagine you have a text box that’s designed for numeric entry, and you want to examine every key press to make sure that it corresponds to a number, and not a letter. To perform this type of task, you can create a customized text box, and override the OnKeyPress() method to add this extra verification logic. Handled = True End If End Sub End Class The OnKeyPress() method is invoked automatically by the Windows Forms engine when a key is pressed in a TextBox control.
Some components display something, but only in specific circumstances and not necessarily on the form itself. NET includes components that can show a help window, an error message, a system tray icon, or a standard dialog box when needed. Other components have no visual appearance at all, and just represent a unit of useful functionality. ) However, components share one important feature with controls—they can be attached to a form and configured at design time. For example, imagine you want to show an animation on your form by reacting to a timer every few milliseconds and refreshing the display.
If you have never programmed with a language like Visual Basic, C++ or C#, or Java before, this isn’t the place to begin. Instead, start with an introductory book on object-oriented design or programming fundamentals. 1, welcome—you’ll find yourself right at home! Chapter Overview The following overview describes what each chapter covers. If you already have some experience with Windows Forms, feel free to skip from chapter to chapter. If you’re relatively new to Windows Forms development, it’s probably best to read through the book to make sure you learn the basics before tackling more-advanced topics.