Comparing Objects In C#

public static class CompareObject {  
    public static bool Compare < T > (T e1, T e2) {  
        bool flag = true;  
        bool match = false;  
        int countFirst, countSecond;  
        foreach(PropertyInfo propObj1 in e1.GetType().GetProperties()) {  
            var propObj2 = e2.GetType().GetProperty(propObj1.Name);  
            if (propObj1.PropertyType.Name.Equals("List`1")) {  
                dynamic objList1 = propObj1.GetValue(e1, null);  
                dynamic objList2 = propObj2.GetValue(e2, null);  
                countFirst = objList1.Count;  
                countSecond = objList2.Count;  
                if (countFirst == countSecond) {  
                    countFirst = objList1.Count - 1;  
                    while (countFirst > -1) {  
                        match = false;  
                        countSecond = objList2.Count - 1;  
                        while (countSecond > -1) {  
                            match = Compare(objList1[countFirst], objList2[countSecond]);  
                            if (match) {  
                                objList2.Remove(objList2[countSecond]);  
                                countSecond = -1;  
                                match = true;  
                            }  
                            if (match == false && countSecond == 0) {  
                                return false;  
                            }  
                            countSecond--;  
                        }  
                        countFirst--;  
                    }  
                } else {  
                    return false;  
                }  
            } else if (!(propObj1.GetValue(e1, null).Equals(propObj2.GetValue(e2, null)))) {  
                flag = false;  
                return flag;  
            }  
        }  
        return flag;  
    }  
} 

Step 3. Modify the Main method of the class/file Program.cs

For our convenience, we have created the objects of both Employee and Student so as to demonstrate that this compare method will be applicable to both classes, and you can create your own class for comparison.

using System;
using System.Collections.Generic;
using Newtonsoft.Json;

public class Employee
{
    public int EmpId { get; set; }
    public string EmpName { get; set; }
    public int EmpAge { get; set; }
    public DateTime JoiningDate { get; set; }
    public List<Department> EmpDepartment { get; set; }
}

public class Department
{
    public int DeptId { get; set; }
    public string DeptName { get; set; }
}

public class Student
{
    public int StudentId { get; set; }
    public string StudentName { get; set; }
    public DateTime JoiningDate { get; set; }
    public List<Course> StudentCourse { get; set; }
}

public class Course
{
    public int CourseId { get; set; }
    public string CourseName { get; set; }
}

public class Program
{
    public static bool AreObjectsEqual<T>(T obj1, T obj2)
    {
        string json1 = JsonConvert.SerializeObject(obj1);
        string json2 = JsonConvert.SerializeObject(obj2);
        return json1 == json2;
    }

    public static void Main(string[] args)
    {
        // Create objects
        Employee e1 = new Employee
        {
            EmpId = 1,
            EmpName = "Subbu",
            EmpAge = 25,
            JoiningDate = DateTime.Now,
            EmpDepartment = new List<Department>
            {
                new Department() { DeptId = 1, DeptName = "android" },
                new Department() { DeptId = 2, DeptName = "ios" }
            }
        };

        Employee e2 = new Employee
        {
            EmpId = 2,
            EmpName = "Subbu",
            EmpAge = 26,
            JoiningDate = DateTime.Now,
            EmpDepartment = new List<Department>
            {
                new Department() { DeptId = 3, DeptName = "mvc" },
                new Department() { DeptId = 4, DeptName = "mvvm" }
            }
        };

        // Compare employees
        bool employeeComparison = AreObjectsEqual(e1, e2);

        Console.WriteLine("Employee Comparison: " + employeeComparison);

        // Create students
        Student s1 = new Student
        {
            StudentId = 1,
            StudentName = "Imran",
            StudentCourse = new List<Course>
            {
                new Course() { CourseId = 1, CourseName = "Course_A" },
                new Course() { CourseId = 2, CourseName = "Course_B" }
            }
        };

        Student s2 = new Student
        {
            StudentId = 2,
            StudentName = "Irfan",
            StudentCourse = new List<Course>
            {
                new Course() { CourseId = 3, CourseName = "Course

Execute the application. You will get the following output.