Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to write the first program in C#?
The following is the first program in C# programming −
Example
using System;
namespace MyHelloWorldApplication {
class MyDemoClass {
static void Main(string[] args) {
// display text
Console.WriteLine("Hello World");
// display another text
Console.WriteLine("Welcome!");
Console.ReadKey();
}
}
}Output
Hello World Welcome!
Let us see now what all it includes.
using System; - the using keyword is used to include the System namespace in the program.
namespace declaration - A namespace is a collection of classes. The MyHelloWorldApplication namespace contains the class MyDemoClass.
The class MyDemoClass contains the data and method definitions that your program uses. Classes generally contain multiple methods.
Main method is the entry point for all C# programs. The Main method states what the class does when executed.
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. Add more text using the same Console.WriteLine(); in C#.
Console.ReadKey(); It 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.
418 Views
