CSharp Inheritance

• In C# we can only inherit from only one parent class (If the parent object is deleted the child object can still exist)
• The Object Class is the parent class of all classes in C# and is automatically inherited
• Inheritance establishes an “Is-A” type of relation between Classes

namespace Inheritance
{
		public class PresentationObject
		{
			public int Width { get; set; }
			public int Height { get; set; }
 
			public void Copy()
			{
				Console.WriteLine("Object copied to Clipboard");
			}
 
			public void Duplicate()
			{
				Console.WriteLine("Objected has been duplicated");
			}
		}
 
		public class Text : PresentationObject
		{
			public int getSize { get; set; }
			public int getFont { get; set; }
 
			public void GetAttribute(string value)
			{
				Console.WriteLine("{0} has been copied to clipboard", value);
			}
		}
 
		class Program
		{
			static void Main(string[] args)
			{
				var text = new Text();
				text.Copy();
			}
		}
}

Accessing Base Class Constructor/ Methods

• Base class Constructors are always executed first. Base class constructors are not inherited by the child class
• To pass values to the constructor of the base class we make use of the base() function
• The methods of the Base class can be accessed using base.MethodName()

using System;
 
namespace Constructors
{
    public class Vechicle
    {
        private readonly string _registerationNumber;
 
        public Vechicle(string registerationNumber)
        {
            _registerationNumber = registerationNumber;
            Console.WriteLine($"Inside Vechicle Constructor : {registerationNumber}");
        }
    }
 
    public class Car : Vechicle
    {
        public Car(string registerationNumber) : base(registerationNumber)
        {
            Console.WriteLine($"Inside Car Constructor : {registerationNumber}");
        }
    }
 
    class Program
    {
        static void Main(string[] args)
        {
            var car1 = new Car("ABC123");
        }
    }
}