Download Application Development Using Visual Basic® and .NET by Dana L. Wyatt PDF

By Dana L. Wyatt

This e-book supplies skilled builders the sensible perception they should construct company purposes utilizing visible easy .NET. utilizing large code examples and a operating case learn, the authors light up the .NET thoughts and applied sciences that supply builders the best strength and price. They disguise the total strategy of developing a .NET software: constructing an easy .NET console program; including a home windows varieties interface; separating performance inside elements; delivering database entry through ADO.NET; securing your code; and utilizing ASP.NET to create net functions and prone.

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Extra info for Application Development Using Visual Basic® and .NET

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NET Framework. NET programming language. Even if you know classic Visual Basic, you should read this part, paying attention to the changes in data types (Chapter 3) and the new object-oriented features (Chapters 5). NET Framework. The Acme Travel Agency case study, which is elaborated throughout the entire book, is introduced in Chapter 5. NET Framework Team-Fly Top Team-Fly Application Development Using Visual Basic&"v1">Table of Contents Part 2. NET Language Chapter 3. NET language, which has undergone radical improvements from previous versions of Visual Basic.

Some common types are Integer for integers and Double for floating-point numbers. NET has the Decimal data type, which has a high degree of precision, suitable for financial calculations. You must declare variables before you use them, and you may optionally initialize them. 06D amount As Decimal = 2000D interest As Decimal total As Decimal = 0D If an initial value is not specified in the declaration, the variable is automatically initialized. For example, an uninitialized Decimal variable is set to zero.

You can run the application from the menu Debug | Start or Debug | Start Without Debugging. Again, there are corresponding toolbar buttons. This "starter" application simply displays a blank form, as shown in Figure 3-3. There are the standard control buttons on the top of the form, and you can close the form in the usual way by clicking the "X" button at the top right of the form. Figure 3-3. Starter application is just a blank form. NET is that you can now create console applications, which provide a simple command-line user interface in a DOS window.

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