1.2.1. .Net Framework #

The .Net framework is an innovative platform that can help you write thefollowing types of applications:

• Windows application

• Web application

• Web service

.Net framework applications are multi-platform applications. The framework is designed so that it can be used in the following languages: C #, C++, Visual Basic, Jscript, COBOL, and so on. All of these languages can access the framework and interact with each other.

.Net framework consists of a huge code base for client languages such as C#. Here are some .Net components of the framework:

• Common Language Runtime - CLR

• .Net framework class library

• Common language Specification

• Common type system

• Metadata and Assemblies

• Windows Forms

• ASP.Net and ASP.Net AJAX

• ADO.Net

• Windows Workflow Foundation

• Windows Presentation Foundation

• Windows Communication Foundation-WCF

• LINQ

For more information about each component, please refer to Microsoft’s documentation.

1.2.2. C# Integrated Development Environment-IDE #

Microsoft provides the following development tools for C # programming:

• Visual Studio 2010 (VS)

• Visual C# 2010 Express (VCE)

• Visual Web Developer

The latter two are free to use and can be downloaded from the official Microsoft website. With these tools, you can write a variety of C# programs, from simple command-line applications to more complex applications. You can also write a C# source code file using a basic text editor, such as Notepad, and compile the code as a component using a command-line compiler (part of the .NET Framework).

The Visual C# Express and Visual Web Developer Express versions are customized versions of Visual Studio and have the same look and feel. They retain most of the functions of Visual Studio. In this tutorial, we are using Visual C# 2010 Express.

You can download it from Microsoft Visual Studio. It will be automatically installed on your machine. Please note that you need an available network connection to complete the express version installation.

1.2.3. Write C# programs on Linux or Mac OS #

Although .NET framework runs on the Windows operating system, but thereare some versions that run on other operating systems to choose from. Mono is an open source version of .NET framework that contains a C#compiler and runs on a variety of operating systems, such as various versions of Linux and Mac OS. For more details, please visit Go Mono.

The goal of Mono is not just to run Microsoft across platforms .NET applications, but also provide better development tools for Linux developers. Mono runs on a variety of operating systems, including Android, BSD, iOS, Linux, OS X, Windows, Solaris, and UNIX.

sudo apt install mono-devel

How to run:

Old version:

$ dmcs --version
Note: dmcs is deprecated, please use mcs instead!
Mono C# compiler version 6.8.0.105

Using mcs command:

mcs csharp_src_file.cs