Demo for creating a new object/type and creating an instance method on that class

Employee.cs

namespace Class_Instance_Method
{
    class Employee
    {
        public string Id { get; set; }
        public string FullName { get; set; }
        public string Email { get; set; }
        public string Phone { get; set; }
        public string doWork()
        {
            return "Work has been completed by";
        }
    }
}

Program.cs

using System;

namespace Class_Instance_Method
{
    class Program
    {
        static void Main(string[] args)
        {
            Employee employee = new Employee();
            employee.FullName = "Brown, David";
            var doWorkStr = employee.doWork();
            Console.WriteLine($"{doWorkStr} {employee.FullName}");
        }
    }
}