Notes

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;


public class Department
{
public int DepartmentId { get; set; }
public string DepartmentName { get; set; }
public string DepartmentPhone { get; set;}
public Department()
{
Console.WriteLine("Departments Default Constructor");
this.DepartmentId = 101;
this.DepartmentName = "CS";
}
public Department(int departmentId,string name)
{
Console.WriteLine("Departments Parametrized Constructor");
this.DepartmentId = departmentId;
this.DepartmentName = name;
}
public void PrintDepartmentDetails()
{
Console.WriteLine($"Department Id : {this.DepartmentId}n Department Name : {this.DepartmentName}");
}
}

public class Employee : Department
{
public int Id { get; set; }
public string Name { get; set; }

public Employee()
{
Console.WriteLine("Inside Employee Default Constructor");
}

public Employee(int id,string name)
{
Console.WriteLine("Inside Employee parametrized Constructor");
this.Id = id;
this.Name = name;
}
public void EmployeeDetails()
{
Console.WriteLine($"Employee Id : {this.Id} n Employee Name : {this.Name}");
}
}

// Main Class
public class Program
{
public static void Main()
{
Employee employee = new Employee();
employee.PrintDepartmentDetails();
employee.EmployeeDetails();

Employee employee1 = new Employee(123,"Mayur");
employee1.PrintDepartmentDetails();
employee1.EmployeeDetails();
}
}