Net tutorial PDF tvnovellas.info programming. After completing this tutorial, you will find yourself at a VB. tvnovellas.info Tutorial for Beginners - Clearnly = (Learn Clearly . DOWNLOAD PDF NET logo, Visual Basic, and/or other Microsoft products referenced herein are either regi ste red tra d e m a r ks or In his spare time, Jonathan enjoys learning new coding tricks in Visual Basic, C++, and other languages. Windows Forms Programming in Visual tvnovellas.info · Read more · tvnovellas.info Programming in Learning Visual tvnovellas.info Read more · Mastering Visual Basic.
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Published just in time for the first release of Visual Basic tvnovellas.info, Programming Visual tvnovellas.info is a programmer's complete guide to Visual tvnovellas.info In this chapter we begin learning about the fundamentals of programming and Visual. tvnovellas.info First we examine the two elements that are required by every . Network Programming in Dot NET With C Sharp and Visual Basic Dot NET NET and Microsoft Visual C#.NET Step by Step Learn Visual Basic pdf.
NET, you'll learn how to analyze the business requirements of an application, model the objects and relationships involved in the solution design and, finally, implement the solution using Visual Basic. Along the way you'll also learn the fundamentals of software design, the Unified Modeling Language UML , object-oriented programming, and Visual Basic. NET is logically organized into three parts. Part One delves into object-oriented programming methodology and design, concepts that transcend a particular programming language. The concepts presented are important to the success of an object-oriented programming solution regardless of the implementation language chosen. At the conclusion of this part, a case study walks you through the design of a solution based on a real-world scenario.
While the development of fully realized web applications using these technologies is beyond the scope of this book, learning the basics of the VB. NET language will certainly get you started in the right direction. NET development. NET application when you want your program to be available to end users on any platform e. By serving your application over the Web, end users can access your program with any browser.
When you want the richness and power of a native application running directly on the Windows platform, alternatively you might create a desktop-bound Windows application. NET tools for building Windows applications are called Windows Forms; a detailed analysis of this technology is also beyond the scope of this book.
This book makes extensive use of console applications to illustrate the basics of the VB. NET language. Web, Windows, and console applications are described and illustrated in the follow- ing pages. All rights reserved. Console applications A console application runs in a console window, as shown in Figure A con- sole window or DOS box provides simple text-based output.
Console applications are very helpful when learning a language because they strip away the distraction of the Graphical User Interface.
Rather than spending your time creating complex windowing applications, you can focus on the details of the language constructs, such as how you create classes and methods, how you branch based on runtime conditions, and how you loop. All these top- ics will be covered in detail in coming chapters. Figure You are already familiar with Windows applications such as Microsoft Word or Excel. Figure shows the output of a simple windows appli- cation. NET application runs on a web server and delivers its functionality through a browser, typically over the Web.
NET technology facilitates developing web applications quickly and easily. Figure shows a message from a simple ASP. NET application. Although most commercial applications will be either Windows or ASP. NET programs, console applications have a tremendous advantage in a VB. NET primer. Windows and ASP. NET applications bring a lot more overhead; there is great complexity in managing the window and all the events associated with the window.
Events are covered in Chapter Console applications keep things simple, allowing you to focus on the features of the language. An ASP. NET applications. For complete coverage of these topics, please see Programming ASP.
NET and Programming.
A program consists of English-language instructions called source code. The syntax for these instructions is strictly defined by the language.
Source code consists of a series of statements. A statement is an instruction to the complier. NET will be to learn the correct syntax of the language. For example, in VB. NET every statement ends with a carriage return or linefeed.
Each instruction has a semantic meaning that expresses what it is you are trying to accomplish. Although you must follow the syntax, the semantics of the language are far more important in developing effective object-oriented programs. This book will provide insight into both the syntax and the semantics of good VB. NET programs. You will save the source code you write in a text file.
You can write this source code file using any simple text editor such as Notepad , or you can use the Visual Studio. Visual Studio. NET is described in Chapter 4.
Once you write your program, you compile it using the VB. NET compiler. The end result of compiling the program is an application. This basic console application is the traditional first program for learning any new language; it demonstrates some of the basic elements of a VB. NET program. This analysis gives something of a pre- view of the language, the fundamentals of which are described much more fully in Chapter 5.
As explained earlier, you can create VB. NET programs with any text editor. You can, for example, create each of the three programs shown previously in Figure , Figure , and Figure with Notepad. NET program using Notepad.
Begin by opening Notepad and typing in the program exactly as shown in Example Example WriteLine "Hello world! Save it to your disk as a file called helloworld. First, however, it must be compiled.
The Compiler Once you save your program to disk, you must compile the code to create your application. Compiling your source code means running a compiler and passing in the source code file. You run the compiler by opening a command prompt DOS box and entering the program name vbc. It turns out to be just slightly more complicated than that, because. The compiler reads your source code and produces IL. You'll see that it's really just a series of tiny dots.
Each dot is either light or dark. Color is three dots - red, blue, or green in one place. So whether a dot is light or dark can be controlled by just a 1 or a 0.
When the "processor" chip in a computer sees the right instruction, it will change the binary numbers that control the image displayed on the screen. This explanation boils a lot of technology down to a really simple version, but it's still essentially correct.
Thinking about the tiny dots on your screen again, you might be able to imagine just how busy your computer must be trying to compute what each one should be. Remember that it also has to work with pages coming in from the web, calculating how to display the cards in your game of solitaire, and the thousands of other things all at the same time. Now think about the job of sending the right commands to do all these things to the processor chip. Sounds impossible, doesn't it?
That it all works billions and billions of times every day all over the world continues to amaze me. Visual Basic is a program that creates other programs. Think of a program as being like a factory that makes things. Some factories make things you use, like a new car. Other factories make things that factories use, like a factory that makes welding machines that make new cars.
Visual Basic, and all programming languages, are like that second kind of factory. Visual Basic is the name of the programming language that we'll use.
Like other languages English, German, Swahili , it's really just a set of rules. Visual Studio is a "development environment" that uses Visual Basic. So Visual Studio is actually the "program" I described earlier. In practice, the two terms are often used to mean the same thing and that's the way I use them. Microsoft sells several different versions of Visual Studio with different capabilities.
But all versions are called Visual Studio. NET because they all use a powerful set of programs called the. NET Framework to do much of the hard work. All versions of Windows sold today include the. I said that we would use Visual Basic Express Edition. That's Microsoft's "official" name for it but it's really just a version of Visual Studio.
Microsoft switches the names around too. If you download one of their more expensive versions of Visual Studio, you'll see that it looks almost exactly the same as the version we will use. Get VB. NET Express. Just go to their home page, Microsoft. That should take you right to the page you need. You'll see a lot of other software that you can download and install too. If you're just getting started, my advice is to do just one thing first.
Follow Microsoft's instructions on their site to download and install VB. The only cost is that you have to register with them to do it. You might also want to check their System Requirements. If you're running Windows XP or later, you should be just fine. You've started writing your first program. Here's the first page you see for VB. NET Express The Start Page is just information from Microsoft. You can close it immediately if you like.
To start programming, click the File Menu and select "New Project NET will respond by creating several files and folders on your computer and displaying a new "Windows Form" in a window like this: To better understand what's happening, stop right here and run your new program.
You might think that you haven't written one yet, but you have. Or rather, VB. NET has. The files and folders that are created automatically by VB. NET will run before you have written even one line of code. The program only includes the blank form that you can see already in the Design window, but it will run.
To run the program in "Debug" mode, just press the F5 key on your computer. You can move, resize, and close the form just like any other window so it is a real program.
This shows the form running: When you exit the form use the "X" in the control menu just like you would for any other window , you should be back in VB. NET again and ready to start writing the code that will make your program work. The Skip Days program There are times when you need to know exactly what day is 30 days, 90 days or days into the future. When you do, you have to find a calendar and start counting days. It's easy to make a mistake. The program we'll write will show you the exact day with one click of a button.
Some programs are designed to work on the web. Others work "behind the scenes" and you don't see them at all. The next lesson discusses how to create these other types of programs. A "Windows Forms Application" is the kind of program that is most familiar to you.
The program works using a window on a screen and familiar "objects" like buttons and textboxes. NET programs consist of "programming statements" that you can understand. NET merges your part and the part created automatically and then "compiles" the program.
The word "compile" means that it is converted from statements you can read into statements that are designed for the computer to read. As we learned earlier, computers only understand 1's and 0's. Compiling a program is the first step in turning it into 1's and 0's. The first statement above reserved a name, "myVariable" so you can save information and refer to it using that name.
There are specific "types" of information that you have to use when you write a program and "String" is one of them. Another example is "Decimal".
The second statement associates specific information with the name you reserved. If you code a later statement: Debug. WriteLine myVariable VB. Learning how to use Visual Studio The statements in your part of the program are kept in a file that is similar to a file you might make using Notepad. But VB. The illustration you saw earlier shows you where Solution Explorer is in VB. NET uses the word "Solution" instead of "Program" because a lot of programs can be combined together into a bigger program and they needed a different word.
When you write a Windows Forms Application, you will select and customize the visual parts of your program the form and things like buttons and textboxes using the Design window that you have already seen. These parts of the program are already there for you to use in the VB. NET Toolbox and they're called "components" or "controls".
A "control" is a "component" that has a visible interface like a Button. A "component" doesn't have any visible interface like a Timer.
You can see the Toolbox lurking over on the left side in a previous illustration.