What is Partial Class?

1/12/2020 1:47:31 AM

Partial classes allow us to split a class into two or more files. All these parts are then combined into a single class, when the application is compiled. The partial keyword can also be used to split a struct or interface over two or more files. Given bellow the example code and explain the code:

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using testForClass1;

namespace testFor
{
    public partial class Employee
    {
        public string _firstName { get; set; }
        public string _lastName { get; set; }
    }
    public partial class Employee
    {
        public string setName(string getFirstName, string getLastName)
        {
            _firstName = getFirstName;
            _lastName = getLastName;
            return _firstName + " " + _lastName;
        }
    }
    public class Program
    {
        static void Main(string[] args)
        {
            Employee obj = new Employee();
            string myName = obj.setName("Farhan Sakib", "Jesy");
            Console.WriteLine("My full name is : " + myName);
            Console.Read();
        }
    }
}

In this two Employee partial class. First declare property into one employee class and then initialize the value another Employee partial class and return the value. Now we create a object of Employee and access booth member of classes. Now print the value in to Main method. Partial class work combined two or more classes.