C# Tech WorkShop #1

This repo is for a techworkshop only.

Quick introduction on csharp

Learning Objectives

• Learn how C# works and how to use Visual Studio (which they should have investigated briefly on their own already)
• Create and run a simple console app
• Learn/refresh some OOP concepts:
  • Polymorphism
  • Encapsulation
  • Abstractions
  • Interfaces

Relevant links

• DataTypes: https://www.w3schools.com/cs/cs_data_types.php
• Abstraction https://www.w3schools.com/cs/cs_abstract.php
• Interfaces https://www.w3schools.com/cs/cs_interface.php
• Inheritance https://www.w3schools.com/cs/cs_inheritance.php
• Type Casting https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/types/casting-and-type-conversions
• Method Overloading https://www.w3schools.com/cs/cs_method_overloading.php

Exercise

• Create a new commandline Project. (Add to existing Solution)

• Create a folder in that project called Models

• Create a good example of OOP using Shapes as classes

• Program.cs

Shape myShape = new Circle(5);
myShape.DisplayType(); 
Console.WriteLine($"Area: {myShape.CalculateArea()}");

Other files

public abstract class Shape
{
    public abstract double CalculateArea();

    public void DisplayType()
    {
        Console.WriteLine("This is a shape calss.");
    }
}

public class Circle : Shape
{
    private double radius;
    public Circle(double radius)
    {
        this.radius = radius;
    }

    public override double CalculateArea()
    {
        return Math.PI * radius * radius; 
    }
}

public class Square : Shape
{
    //Implement this class.
}