DEV Community: KeigoNakano

What Does Console Application Mean in C#?

KeigoNakano — Sun, 20 Aug 2023 02:07:18 +0000

A console application facilitates the reading and writing of characters from a console.It is the simplest form of a C# program and is typically invoked from terminal.It is usually stand-alone executable file.

Main method in C#9 and later

KeigoNakano — Sun, 20 Aug 2023 01:32:24 +0000

In C#9 and later, it is not necessary to explicity include Main() in a console application.

In C#9 and later

// See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");

Prior to C#9

using System;
name MyApp // Note: actual namespace depends on the project name.
{
   internal class Program
  {
      static void Main(string[] args)
      {
          Console.WriteLine("Hello World!")
      }
   }
}

Working with C# in VS Code.

KeigoNakano — Sat, 19 Aug 2023 03:50:47 +0000

What can C# can do?

Application development(Xamarin)
Game　development(Unity, UnrealEngine)
Web application development C# can be used universally.

Getting started guide with official documentation

Install

Install C# Dev Kit from the Visual Sdudio Marketplace.→C# extension is installed automatically.
Sign in with Microsoft to use Dev Kit
Install .Net Coding Pack from official document(https://code.visualstudio.com/docs/csharp/get-started)
Open folder

mkdir hello
cd hello
code .

Create a Hello World app

Create a Hello World app by using the terminal
1. Open a terminal/command prompt and navigate to hello/.
2. Enter the following command in the command shell
```
 dotnet new console
```
3. Run the app by entering the following command in the command shell:
```
 dotnet run
```
The resulting output to the terminal is "Hello, World!"