20/05/19

How To Run C Program In Visual Basic

• How To Program Visual Basic

This instructable will show you how to program Microsoft Visual Basic 2005 Express Edition. Visual C# and Visual C++ in the one product. Hello World -- Your First Program. With Visual C# and Visual Basic. Before you have a chance to read the output when you run your program in.

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When you build source code, the build engine creates assemblies and executable applications. In general, the build process is very similar across many different project types such as Windows, ASP.NET, mobile apps, and others. The build process is also similar across programming languages such as C#, Visual Basic, C++, and F#.

By building your code often, you can quickly identify compile-time errors, such as incorrect syntax, misspelled keywords, and type mismatches. You can also detect and correct run-time errors, such as logic errors and semantic errors, by building and running debug versions of the code.

A successful build validates that the application's source code contains correct syntax and that all static references to libraries, assemblies, and other components can resolve. An application executable is produced that can be tested for proper functioning in both a debugging environment and through a variety of manual and automated tests to validate code quality. Once the application has been fully tested, you can compile a release version to deploy to your customers. For an introduction to this process, see Walkthrough: Building an application.

You can use any of the following methods to build an application: the Visual Studio IDE, the MSBuild command-line tools, and Azure Pipelines:

Build Method	Benefits
IDE	- Create builds immediately and test them in a debugger. - Run multi-processor builds for C++ and C# projects. - Customize different aspects of the build system.
MSBuild command line	- Build projects without installing Visual Studio. - Run multi-processor builds for all project types. - Customize most areas of the build system.
Azure Pipelines	- Automate your build process as part of a continuous integration/continuous delivery pipeline. - Apply automated tests with every build. - Employ virtually unlimited cloud-based resources for build processes. - Modify the build workflow and create build activities to perform deeply customized tasks.

The documentation in this section goes into further details of the IDE-based build process. For more information on the other methods, see MSBuild and Azure Pipelines, respectively.

Note

This topic applies to Visual Studio on Windows. For Visual Studio for Mac, see Compile and build in Visual Studio for Mac.

Overview of building from the IDE

When you create a project, Visual Studio created default build configurations for the project and the solution that contains the project. These configurations define how the solutions and projects are built and deployed. Project configurations in particular are unique for a target platform (such as Windows or Linux) and build type (such as debug or release). You can edit these configurations however you like, and can also create your own configurations as needed.

For a first introduction to building within the IDE, see Walkthrough: Building an application.

Next, see Building and cleaning projects and solutions in Visual Studio to learn about the different aspects customizations you can make to the process. Customizations include changing output directories, specifying custom build events, managing project dependencies, managing build log files, and suppressing compiler warnings.

From there, you can explore a variety of other tasks:

• Manage project and solution properties.
• Specify build events in C# and Visual Basic.
• Build multiple projects in parallel.

See also

Before we study basic building blocks of the C# programming language, let us look at a bare minimum C# program structure so that we can take it as a reference in upcoming chapters.

Creating Hello World Program

A C# program consists of the following parts −

• Namespace declaration
• A class
• Class methods
• Class attributes
• A Main method
• Statements and Expressions
• Comments

Let us look at a simple code that prints the words 'Hello World' −

How To Program Visual Basic

Live Demo

When this code is compiled and executed, it produces the following result −

Let us look at the various parts of the given program −

• The first line of the program using System; - the using keyword is used to include the System namespace in the program. A program generally has multiple using statements.

• The next line has the namespace declaration. A namespace is a collection of classes. The HelloWorldApplication namespace contains the class HelloWorld.

• The next line has a class declaration, the class HelloWorld contains the data and method definitions that your program uses. Classes generally contain multiple methods. Methods define the behavior of the class. However, the HelloWorld class has only one method Main.

• The next line defines the Main method, which is the entry point for all C# programs. The Main method states what the class does when executed.

• The next line /*...*/ is ignored by the compiler and it is put to add comments in the program.

• The Main method specifies its behavior with the statement Console.WriteLine('Hello World');

  WriteLine is a method of the Console class defined in the System namespace. This statement causes the message 'Hello, World!' to be displayed on the screen.

• The last line Console.ReadKey(); is for the VS.NET Users. This makes the program wait for a key press and it prevents the screen from running and closing quickly when the program is launched from Visual Studio .NET.

It is worth to note the following points −

• C# is case sensitive.

• All statements and expression must end with a semicolon (;).

• The program execution starts at the Main method.

• Unlike Java, program file name could be different from the class name.

Compiling and Executing the Program

If you are using Visual Studio.Net for compiling and executing C# programs, take the following steps −

• Start Visual Studio.

• On the menu bar, choose File -> New -> Project.

• Choose Visual C# from templates, and then choose Windows.

• Choose Console Application.

• Specify a name for your project and click OK button.

• This creates a new project in Solution Explorer.

• Write code in the Code Editor.

• Click the Run button or press F5 key to execute the project. A Command Prompt window appears that contains the line Hello World.

You can compile a C# program by using the command-line instead of the Visual Studio IDE −

• Open a text editor and add the above-mentioned code.

• Save the file as helloworld.cs

• Open the command prompt tool and go to the directory where you saved the file.

• Type csc helloworld.cs and press enter to compile your code.

• If there are no errors in your code, the command prompt takes you to the next line and generates helloworld.exe executable file.

• Type helloworld to execute your program.

• You can see the output Hello World printed on the screen.