Example program of .net

NET Core web app and associated unit tests. It starts by creating a simple web service app and then adds tests. It continues with creating more tests to guide implementing new features. Tutorial: Create a. This tutorial shows how to create and run a. Project tasks, such as creating, compiling, and running a project are done by using the. This tutorial shows how to write libraries for. For more. NET tutorials, see Learn.

NET and the. See the ASP. NET Core tutorials. Many articles in the ASP. NET Core documentation have links to samples written for them. This sample demonstrates the syntax and features for creating and consuming C iterators. This sample demonstrates the syntax and features for C indexers. Delegates and Events.

This sample demonstrates the syntax and features for C delegates and events. A second sample focused on events is also in the same repository. Compiling Hello. After compiling, type Hello at the command line to run your program. Figure shows the results of compiling and running this program.

Types are grouped into namespaces to help avoid name collisions and to group related types together. Specifically, the hello, world program uses the Console class, which is defined in the System namespace. The Imports statement is merely a convenience. It is not needed if the developer is willing to qualify type names with their namespace names. For example, the hello, world program could have been written this way:.

However, it is customary to use the Imports statement to reduce keystrokes and visual clutter. An important namespace for Visual Basic developers is Microsoft. For example, the Visual Basic Trim function is a member of the Microsoft. Strings class, while the MsgBox function is a member of the Microsoft. Interaction class. Much of the functionality available in this namespace, however, is also duplicated within the.

Developers who are not familiar with Visual Basic 6 will likely choose to ignore this namespace, favoring the functionality provided by the. NET Framework. NET Framework is introduced later in this chapter and is explained in detail in Chapter 3. This line begins the declaration of a standard module named Hello. The standard-module declaration ends with this line:. In Visual Basic 6, various program objects were defined by placing source code in files having various filename extensions. For example, code that defined classes was placed in.

In Visual Basic. NET, all source files have. For example, classes are defined with the Class End Class construct, and standard modules are defined with the Module End Module construct. Any particular. The purpose of standard modules in Visual Basic 6 was to hold code that was outside of any class definition. For example, global constants, global variables, and procedure libraries were often placed in standard modules. Standard modules in Visual Basic. NET serve a similar purpose and can be used in much the same way.

However, in Visual Basic. NET they define datatypes that cannot be instantiated and whose members are all static. This will be discussed in more detail in Chapter 2. The next line in the example begins the definition of a subroutine named Main :.

This syntax is similar to Visual Basic 6. The Sub statement begins the definition of a subroutine -- a method that has no return value. The Main subroutine is the entry point for the application. When the Visual Basic. NET compiler is invoked, it looks for a subroutine named Main in one of the classes or standard modules exposed by the application. If Main is declared in a class rather than in a standard module, the subroutine must be declared with the Shared modifier. This modifier indicates that the class does not need to be instantiated for the subroutine to be invoked.

In either case, the Main subroutine must be Public. Nov 1, Remove extendedZipContent. Jul 29, Add sample for. Oct 1, Removing ununsed method Sep 24, Bump System. Nov 11, Update WinForms project from 4. Jan 5, Update branch names in workflows and links Mar 9, NET code analysis Feb 12, New in csharp7 Nov 13, Add WCF samples Jul 9, Add markdownlint with GitHub actions Jan 9, Nov 14, Update link to Contributing Guide to point to new location May 16, Fixed smart quotes May 14, Legal updates from CELA Mar 21, Fix Markdownlint issues Mar 10, Update dotnet-versionsweeper.

Sep 2, View code. NET Samples This repo contains all the sample code that is part of any topic under the. The best process is to file an issue from the feedback control at the bottom of each docs page: For existing samples, file the issue on the page with the sample.

To suggest new samples, file the issue on the index page where you want to see the new sample. Building a sample Build any. Then run these commands from the CLI in the directory of any sample: dotnet build dotnet run.