Properties a short explanation using C#

What Are Properties?

Properties are methods that protect access to class members.
Properties are class members that provide access to elements of an object or class.
Protect access to the state of object.
It likes fields, but they operate much like methods.
The get and set statements are called accessors.
Fields can’t be used in Interfaces so properties are the solution.

Syntax:

        private double balance;
        public double Balance
        {
            get
            {
                return balance;
            }
            set
            {
                balance = value;
            }
        }

Example:

    public class Employee
    {
        private double salary;
        private double taxRate = 0.05;
        

        public string Name { get; set; }
        public double YearOfExp { get; set; }

        public double YearlyMedicalAllowance {get; private set;}

        public Employee()
        {
            this.YearlyMedicalAllowance = 30000;
        }

        public double Salary
        {
            get { return salary; }
            set {
                if (value > 200000)
                    salary = value - value * taxRate;
                else
                    salary = 5000;
            }
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            Employee objEmployee = new Employee();
            objEmployee.Name = "Rafiqul Islam";
            objEmployee.YearOfExp = 7;
            objEmployee.Salary = 5000;
            
            Console.WriteLine(objEmployee.Name);
            Console.WriteLine("Salary: " + objEmployee.Salary);
            Console.WriteLine("Yearly Madical Allowance" + objEmployee.YearlyMedicalAllowance);

            Console.ReadLine();
        }
    }

Static Constructor and C# implementation

Static Constructor

Instance constructors are used to initialize an object
Static constructors are used to initialize a class
Will only ever be executed once
Run before the first object of that type is created.
Have no parameter
Do not take an access modifier
May co-exist with a class constructor

Syntax:

        class Lion
        {
            static Lion()
            {
                // class-specific initialization
            }
        }

Example:

class RandomNumberGenerator
{
private static Random randomNumber;
public static string AuthorName { get; set; }

public RandomNumberGenerator(String msg)
{
Console.WriteLine(msg);
//Constructor for object
}

//Static constructor
static RandomNumberGenerator()
{
AuthorName = “Mahedee Hasan”;
randomNumber = new Random();
}

public int Next()
{
return randomNumber.Next();
}
}

class Program
{
static void Main(string[] args)
{
RandomNumberGenerator randomNumber
= new RandomNumberGenerator(“Generate 10 Random Number”);

for (int i = 0; i < 10; i++) { Console.WriteLine(randomNumber.Next()); } Console.WriteLine(“Author Name: ” + RandomNumberGenerator.AuthorName); Console.ReadKey(); } } [/csharp]

Love Calculator using C#

Love Calculator

    public class LoveCalculator
    {
        public string GetResults(string name1, string name2)
        {
            return GetCount(name1, name2);
        }
        private string GetCount(string firstName, string secondName)
        {
            try
            {
                string first = firstName.ToUpper();
                int firstlength = firstName.Length;
                string second = secondName.ToUpper();
                int secondlength = secondName.Length;
                int LoveCount = 0;

                for (int Count = 0; Count < firstlength; Count++)
                {
                    string singleLetter = first.Substring(Count, 1);
                    if (singleLetter.Equals("A")) LoveCount += 2;
                    if (singleLetter.Equals("E")) LoveCount += 2;
                    if (singleLetter.Equals("I")) LoveCount += 2;
                    if (singleLetter.Equals("O")) LoveCount += 2;
                    if (singleLetter.Equals("U")) LoveCount += 3;
                    if (singleLetter.Equals("A")) LoveCount += 1;
                    if (singleLetter.Equals("E")) LoveCount += 3;
                }
                for (int Count = 0; Count < secondlength; Count++)
                {
                    string singleLetter = second.Substring(Count, 1);
                    if (singleLetter.Equals("A")) LoveCount += 2;
                    if (singleLetter.Equals("E")) LoveCount += 2;
                    if (singleLetter.Equals("I")) LoveCount += 2;
                    if (singleLetter.Equals("O")) LoveCount += 2;
                    if (singleLetter.Equals("U")) LoveCount += 3;
                    if (singleLetter.Equals("A")) LoveCount += 1;
                    if (singleLetter.Equals("E")) LoveCount += 3;
                }
                int amount = 0;
                if (LoveCount > 0) amount = 5 - ((firstlength + secondlength) / 2);
                if (LoveCount > 2) amount = 10 - ((firstlength + secondlength) / 2);
                if (LoveCount > 4) amount = 20 - ((firstlength + secondlength) / 2);
                if (LoveCount > 6) amount = 30 - ((firstlength + secondlength) / 2);
                if (LoveCount > 8) amount = 40 - ((firstlength + secondlength) / 2);
                if (LoveCount > 10) amount = 50 - ((firstlength + secondlength) / 2);
                if (LoveCount > 12) amount = 60 - ((firstlength + secondlength) / 2);
                if (LoveCount > 14) amount = 70 - ((firstlength + secondlength) / 2);
                if (LoveCount > 16) amount = 80 - ((firstlength + secondlength) / 2);
                if (LoveCount > 18) amount = 90 - ((firstlength + secondlength) / 2);
                if (LoveCount > 20) amount = 100 - ((firstlength + secondlength) / 2);
                if (LoveCount > 22) amount = 110 - ((firstlength + secondlength) / 2);
                if (firstlength == 0 || secondlength == 0) amount = 0;
                if (amount < 0) amount = 0;
                if (amount > 99) amount = 99;
                return amount.ToString();
            }
            catch (Exception ex)
            {
                return "There is an error!!" + ex.ToString();
            }
        }
    }


    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("Love Calculator");

            while (true)
            {
                Console.Write("Enter First Name:");

                string name1 = Console.ReadLine();
                Console.Write("Enter Second Name:");

                string name2 = Console.ReadLine();

                LoveCalculator loveCalculator = new LoveCalculator();
                string result = loveCalculator.GetResults(name1, name2);
                Console.WriteLine("Love Result :" + result + "%");
                Console.WriteLine("Press q to exit");
                string quit = Console.ReadLine();
                if (quit.ToLower().Trim() == "q")
                    break;
            }
        }
    }

How to remove special character from Unicode string

Here is the sample code to remove special character from Unicode string.
Sample Input: SG@%@sgs th? g#%@^@#$ chào^#^$#!abc35| _ sgs _35 hello world không gsg
Sample Output: SG%sgs th? g#%^#$ chào^#^$#!abc35 sgs 35 hello world không gsg

    class Program
    {
        static void Main(string[] args)
        {
            string inputString = "SG@%@sgs thể g#%@^@#$ chào^#^$#!abc35| _ sgs _35 hello world không gsg";

            string outputString = inputString.Replace("@", "").Replace("|", "").Replace("_", "");

            Console.WriteLine(inputString);
            Console.WriteLine(outputString);
            Console.ReadKey();
        }
    }

Download Source Code