Before You Start If you are absolute beginner please watch the provided video links from Microsoft Virtual Academy Lectures by Instructor | Bob Tabor – Microsoft MVP. The tutorials explains which software to download to start coding and running the programs in C# programming language.

Begin with Traditioal Hello World! program

        //Example Listing 2.1
        using System;
        namespace QSSTraining
        {
            class Program
            {
                public static void  Main(string[] args)
                {
                      Console.Write("Hello World!");
                }
            }
        }
        

First example code

        //Example Listing 2.1
        using System;
        namespace QSSTraining
        {
            class Program
            {
                public static void  Main(string[] args)
                {
                Console.Write("Welcome to C# .NET Programming World!");
                }
            }
        }
        

Note:The System.Console.ReadLine()method will cause the application to pause until the user presses the Enter key.

ReadLine method example code

        //Example Listing 2.2
        //ReadLine.cs
        using System;
        namespace QSSTraining
        {
            class Program
            {
                public static void Main(string[] args)
                {
                Console.Write("Hello World!");
                Console.ReadLine();
                }
            }
        }
        

Basic Console Input/Output Methods

Input Methods
Read: The Read method reads the next character from the keyboard.
ReadLine: The ReadLine method reads all characters up to the end of the input line (the carriage return character).

Output Methods
Basic Console Output Methods: (1)Write and (2)WriteLine
Write: Writes the specified information to the standard output stream.
WriteLine: Writes the specified data, followed by the current line terminator, to the standard output stream.

        
        //Example Listing 2.3
        using System;
        namespace QSSTraining
        {
            class Program
            {
                public static void Main(string[] args)
                {
                    Console.Write("Please enter First Name: ");
                    string firstName = Console.ReadLine();
               
                    Console.Write("Please enter Last Name: ");
                    string lastName = Console.ReadLine();
               
                    Console.Write("You entered ");
                    Console.WriteLine("First Name = {0} Last Name = {1}",
                                                    firstName, lastName);
                    Console.Read();
                }
            }
        }