Csharp/C Sharp/Development Class/Console

Beep

 
using System;
using System.Media;
class MainClass {
    public static void Main() {
        Console.Beep();
    }
}

Beep(

 
using System;
using System.Media;
class MainClass {
    public static void Main() {
        // Play a  beep with frequency as 200 and duration as 300
        Console.Beep(200, 300);
    }
}

Change console foreground color and background color

using System;
public class Test{
   static void Main(string[] args){
      Console.Title = "Standard Console";
      Console.ForegroundColor = ConsoleColor.Red;
      Console.BackgroundColor = ConsoleColor.Green;
      Console.WriteLine("Press Enter to change the Console"s appearance.");
      Console.ReadLine();
  }
}

Clear console

using System;
public class Test{
   static void Main(string[] args){
      // Change the Console appearance and redisplay.
      Console.Title = "Cleared / Colored Console";
      Console.ForegroundColor = ConsoleColor.Blue;
      Console.BackgroundColor = ConsoleColor.Yellow;
      Console.Clear();
      Console.WriteLine("Press Enter to change the Console"s appearance.");
      Console.ReadLine();
  }
}

CursorVisible ResetColor SetWindowSize BufferHeight BufferWidth CursorLeft CursorSize CursorTop

 
using System;
public class MainClass
{
    static void Main(string[] args) {
       // Change the console appearance and redisplay.
       Console.Title = "Resized Console";
       Console.ResetColor();
       Console.Clear();
       Console.SetWindowSize(100, 50);
       Console.BufferHeight = 500;
       Console.BufferWidth = 100;
       Console.CursorLeft = 20;
       Console.CursorSize = 50;
       Console.CursorTop = 20;
       Console.CursorVisible = false;
   }
}

Displaying the sum of two numbers input from the keyboard.

using System;
public class Addition
{
   public static void Main( string[] args )
   {
      int number1; 
      int number2; 
      int sum; 
      Console.Write( "Enter first integer: " ); 
      number1 = Convert.ToInt32( Console.ReadLine() );
      Console.Write( "Enter second integer: " );
      number2 = Convert.ToInt32( Console.ReadLine() );
      sum = number1 + number2;
      Console.WriteLine( "Sum is {0}", sum );
   } 
}

Echo some stats

 
using System;
using System.Collections.Generic;
using System.Text;
class Program {
    static void Main(string[] args) {
        Console.Write("Enter your name: ");
        string s;
        s = Console.ReadLine();
        Console.WriteLine("Hello, {0} ", s);
        Console.Write("Enter your age: ");
        s = Console.ReadLine();
        Console.WriteLine("You are {0} years old", s);
    }
}

Printing multiple lines of text with string formatting.

using System;
public class Welcome4
{
   public static void Main( string[] args )
   {
      Console.WriteLine( "{0}\n{1}", "Welcome to", "C# Programming!" );
   } 
}

Printing multiple lines with a single statement.

using System;
public class Welcome3
{
   public static void Main( string[] args )
   {
      Console.WriteLine( "Welcome\nto\nC#\nProgramming!" );
   } 
}

Printing one line of text with multiple statements.

using System;
public class Welcome2 {
    public static void Main(string[] args) {
        Console.Write("Welcome to ");
        Console.WriteLine("C# Programming!");
    }
}

Read a line of string and check its length

 
using System;
class MainEntryPoint {
    static void Main(string[] args) {
        Console.WriteLine("Type in a string");
        string input;
        input = Console.ReadLine();
        if (input == "") {
            Console.WriteLine("You typed in an empty string");
        } else if (input.Length < 5) {
            Console.WriteLine("The string had less than 5 characters");
        } else if (input.Length < 10) {
            Console.WriteLine("The string had at least 5 but less than 10 characters");
        }
        Console.WriteLine("The string was " + input);
    }
}

Set console: title, window size, buffer height and width, cursor position

using System;
public class Test{
   static void Main(string[] args){

      // Change the Console appearance and redisplay.
      Console.Title = "Resized Console";
      Console.ResetColor();
      Console.Clear();
      Console.SetWindowSize(100, 50);
      Console.BufferHeight = 500;
      Console.BufferWidth = 100;
      Console.CursorLeft = 20;
      Console.CursorSize = 50;
      Console.CursorTop = 20;
      Console.CursorVisible = false;
      Console.WriteLine("Main method complete. Press Enter.");
      Console.ReadLine();
  }
}

Use Red and Green from ConsoleColor

using System;

public class MainClass
{
    static void Main(string[] args) {
       // Change the console appearance and redisplay.
       Console.Title = "Colored Text";
       Console.ForegroundColor = ConsoleColor.Red;
       Console.BackgroundColor = ConsoleColor.Green;
   }
}

WriteLine and Write

 

using System;
class ConsoleAdder {
    public static void Main() {
        int a = 15;
        int b = 744;
        int c = a + b;
        Console.Write("The sum of ");
        Console.Write(a);
        Console.Write(" and ");
        Console.Write(b);
        Console.Write(" equals ");
        Console.WriteLine(c);
        Console.WriteLine("The sum of " + a + " and " + b + " equals " + c);
        Console.WriteLine("The sum of {0} and {1} equals {2}", a, b, c);
    }
}