SOLID Principles | C# Online Compiler

SOLID Principles by NISHANTGIRI

using System;
using System.Collections;
using System.Collections.Generic;



					
public class Program
{
	public static void Main()
	{
		FileLogger obj= new FileLogger();
		Customer objcustomer = new Customer();
		SilverCustomer objSilverCustomer = new SilverCustomer();
		
		//ILogger obj;
		
		try
            {
				objcustomer.CustType=1;
				double totalDiscount = objcustomer.getDiscount(500);
				System.Console.WriteLine("totalDiscount :: " +totalDiscount);
			
				objcustomer.CustType =2;
				double totalDiscount2 = objcustomer.getDiscount(500);
				System.Console.WriteLine("totalDiscount2 :: " +totalDiscount2);
			
				objSilverCustomer.CustType =2;
				double totalDiscount3 = objSilverCustomer.getDiscount(500);
				System.Console.WriteLine("totalDiscount3 :: " +totalDiscount3);
			
				System.Console.WriteLine("hello worldv-1 ");
			
				//List<IDatabase> Customers = new List<IDatabase>();
				//Customers.Add(new SilverCustomer());
				//Customers.Add(new Enquiry());
			
				List<IDiscount> Customers = new List<IDiscount>();
				Customers.Add(new SilverCustomer());
				Customers.Add(new Enquiry());
			
				foreach (IDatabase o in Customers)
				{
					o.Add();
				}
			
			
				/* Interface segregation principle*/
				IRead objIRead = new CustomerwithRead();
				objIRead.Read();
			
            }
            catch (Exception ex)
            {
			/*	if (ex.ToString()=="1")
				{
					obj = new FileLogger();
					obj.Handle(ex.Message());
				}
				else
				{
					obj = new EventLogger();
					obj.Handle(ex.ToString());
				} */
            }
	}
	
	
	class FileLogger : ILogger
    {
        public void Handle(string error)
        {
            System.Console.WriteLine("FileLogger 0 12:: FileLogger " + error);
        }
    }
	
	class EventLogger : ILogger
    {
        public void Handle(string error)
        {
            System.Console.WriteLine("FileLogger 0 12:: EventLogger " + error);
        }
    }
	
	class NormalLogger : ILogger
    {
        public void Handle(string error)
        {
            System.Console.WriteLine("FileLogger 0 12:: NormalLogger " + error);
        }
    }


	class Customer: IDiscount,IDatabase
	{
		private int _CustType;
		
		public int CustType
		{
			get { return _CustType; }
			set { _CustType = value; }
		}
		
		public virtual double getDiscount(double TotalSales)
		{
			if (_CustType == 1)
			{
				return TotalSales - 100;
			}
			else
			{
				return TotalSales - 50;
			}
		}
		
		public virtual void Add()
        {
			try
			{
				//db code here
			}
			catch (Exception ex)
			{
				System.Console.WriteLine(ex.ToString());
			}
            
        }
	}
	/* for extensibility of the code - open closed principle*/
	
	class SilverCustomer : Customer
    {
        public override double getDiscount(double TotalSales)
        {
            return base.getDiscount(TotalSales) - 200;
        }
		
		public override void Add()
        {
			try
			{
				//db code here
			}
			catch (Exception ex)
			{
				System.Console.WriteLine(ex.ToString());
			}
            
        }
		
    }
	
	class Enquiry : IDiscount
    {
        public  double getDiscount(double TotalSales)
        {
            return getDiscount(TotalSales) - 5;
        }

    }
	
	
	class CustomerwithRead: IDiscount,IDatabase,IRead
	{
		private int _CustType;
		
		public int CustType
		{
			get { return _CustType; }
			set { _CustType = value; }
		}
		
		public virtual double getDiscount(double TotalSales)
		{
			if (_CustType == 1)
			{
				return TotalSales - 100;
			}
			else
			{
				return TotalSales - 50;
			}
		}
		
		public virtual void Add()
        {
			try
			{
				//db code here
			}
			catch (Exception ex)
			{
				System.Console.WriteLine(ex.ToString());
			}
            
        }
		
		public virtual void Read()
        {
			try
			{
				System.Console.WriteLine("Read I S P " );	
			}
			catch (Exception ex)
			{
				System.Console.WriteLine(ex.ToString());
			}
            
        }
		
	}
	
	
	interface IDiscount
	{
		double getDiscount(double TotalSales);
	}
	
	
	interface IDatabase
	{
		void Add();
	}
	
	interface IRead
	{
		void Read();
	}
	
	
	interface ILogger
	{
			void Handle(string error);
	}
	
	

	
}

​x
 
using System;
using System.Collections;
using System.Collections.Generic;
​
​
​
                    
public class Program
{
    public static void Main()
    {
        FileLogger obj= new FileLogger();
        Customer objcustomer = new Customer();
        SilverCustomer objSilverCustomer = new SilverCustomer();
        
        //ILogger obj;
        
        try
            {
                objcustomer.CustType=1;
                double totalDiscount = objcustomer.getDiscount(500);
                System.Console.WriteLine("totalDiscount :: " +totalDiscount);
            
                objcustomer.CustType =2;
                double totalDiscount2 = objcustomer.getDiscount(500);
                System.Console.WriteLine("totalDiscount2 :: " +totalDiscount2);
            
                objSilverCustomer.CustType =2;
                double totalDiscount3 = objSilverCustomer.getDiscount(500);
                System.Console.WriteLine("totalDiscount3 :: " +totalDiscount3);
            
                System.Console.WriteLine("hello worldv-1 ");
            
                //List<IDatabase> Customers = new List<IDatabase>();
                //Customers.Add(new SilverCustomer());
                //Customers.Add(new Enquiry());
            
                List<IDiscount> Customers = new List<IDiscount>();
                Customers.Add(new SilverCustomer());
                Customers.Add(new Enquiry());
            
                foreach (IDatabase o in Customers)
                {
                    o.Add();
                }
            
            
                /* Interface segregation principle*/
                IRead objIRead = new CustomerwithRead();
                objIRead.Read();
            
            }
            catch (Exception ex)
            {
            /*  if (ex.ToString()=="1")
                {
                    obj = new FileLogger();
                    obj.Handle(ex.Message());
                }
                else
                {
                    obj = new EventLogger();
                    obj.Handle(ex.ToString());
                } */
            }
    }
    
    
    class FileLogger : ILogger
    {
        public void Handle(string error)
        {
            System.Console.WriteLine("FileLogger 0 12:: FileLogger " + error);
        }
    }
    
    class EventLogger : ILogger
    {
        public void Handle(string error)
        {
            System.Console.WriteLine("FileLogger 0 12:: EventLogger " + error);
        }
    }
    
    class NormalLogger : ILogger
    {
        public void Handle(string error)
        {
            System.Console.WriteLine("FileLogger 0 12:: NormalLogger " + error);
        }
    }
​
​
    class Customer: IDiscount,IDatabase
    {
        private int _CustType;
        
        public int CustType
        {
            get { return _CustType; }
            set { _CustType = value; }
        }
        
        public virtual double getDiscount(double TotalSales)
        {
            if (_CustType == 1)
            {
                return TotalSales - 100;
            }
            else
            {
                return TotalSales - 50;
            }
        }
        
        public virtual void Add()
        {
            try
            {
                //db code here
            }
            catch (Exception ex)
            {
                System.Console.WriteLine(ex.ToString());
            }
            
        }
    }
    /* for extensibility of the code - open closed principle*/
    
    class SilverCustomer : Customer
    {
        public override double getDiscount(double TotalSales)
        {
            return base.getDiscount(TotalSales) - 200;
        }
        
        public override void Add()
        {
            try
            {
                //db code here
            }
            catch (Exception ex)
            {
                System.Console.WriteLine(ex.ToString());
            }
            
        }
        
    }
    
    class Enquiry : IDiscount
    {
        public  double getDiscount(double TotalSales)
        {
            return getDiscount(TotalSales) - 5;
        }
​
    }
    
    
    class CustomerwithRead: IDiscount,IDatabase,IRead
    {
        private int _CustType;
        
        public int CustType
        {
            get { return _CustType; }
            set { _CustType = value; }
        }
        
        public virtual double getDiscount(double TotalSales)
        {
            if (_CustType == 1)
            {
                return TotalSales - 100;
            }
            else
            {
                return TotalSales - 50;
            }
        }
        
        public virtual void Add()
        {
            try
            {
                //db code here
            }
            catch (Exception ex)
            {
                System.Console.WriteLine(ex.ToString());
            }
            
        }
        
        public virtual void Read()
        {
            try
            {
                System.Console.WriteLine("Read I S P " );   
            }
            catch (Exception ex)
            {
                System.Console.WriteLine(ex.ToString());
            }
            
        }
        
    }
    
    
    interface IDiscount
    {
        double getDiscount(double TotalSales);
    }
    
    
    interface IDatabase
    {
        void Add();
    }
    
    interface IRead
    {
        void Read();
    }
    
    
    interface ILogger
    {
            void Handle(string error);
    }
    
    
​
    
}
​

1 - Invoices Before

InvoiceID	Number	Items
1	Old_Number_0
2	Old_Number_1

2 - InvoiceItems Before

InvoiceItemID	ProductName	Invoice
1	Old_ProductName_0_0
2	Old_ProductName_0_1
3	Old_ProductName_0_2
4	Old_ProductName_1_0
5	Old_ProductName_1_1
6	Old_ProductName_1_2

3 - Invoices After

InvoiceID	Number	Items
1	Number_0
2	Number_1
3	Number_2
4	Number_3
5	Number_4

4 - InvoiceItems After

InvoiceItemID	ProductName	Invoice
1	ProductName_0_0
2	ProductName_0_1
3	ProductName_0_2
4	ProductName_1_0
5	ProductName_1_1
6	ProductName_1_2
7	ProductName_2_0
8	ProductName_2_1
9	ProductName_2_2
10	ProductName_3_0
11	ProductName_3_1
12	ProductName_3_2
13	ProductName_4_0
14	ProductName_4_1
15	ProductName_4_2

Cached Result
Last Run:	12:25:16 am
Compile:	0.273s
Execute:	8.528s
Memory:	56.45Mb
CPU:	5.031s

1 - Invoices Before

2 - InvoiceItems Before

3 - Invoices After

4 - InvoiceItems After

View IL Code