The Program in C# Program to Count Total Number of duplicate elements in array is given below:

using System;

namespace CountDuplicates
{
    class Program
    {
        static void Main(string[] args)
        {
             Console.WriteLine("Hello Codeauri Family,enter an element below to check the number of duplicates ");
            Console.WriteLine("Enter the number of elements in the array: ");
            int n = int.Parse(Console.ReadLine());

            int[] numbers = new int[n];

            Console.WriteLine("Enter the elements of the array: ");
            for (int i = 0; i < n; i++)
            {
                numbers[i] = int.Parse(Console.ReadLine());
            }

            int count = 0;

            for (int i = 0; i < numbers.Length; i++)
            {
                for (int j = i + 1; j < numbers.Length; j++)
                {
                    if (numbers[i] == numbers[j])
                    {
                        count++;
                        break;
                    }
                }
            }

            Console.WriteLine("Okay, the total number of duplicates: " + count);
            Console.ReadLine();
        }
    }
}

Output:

Hello Codeauri Family,enter an element below to check the number of duplicates
Enter the number of elements in the array: 5

Enter the elements of the array:
10
20
10
40
44
Okay, the total number of duplicates: 1

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Here are the step by step execution of above program:

1. The program starts by using the “System” namespace.
2. The program defines a namespace called “CountDuplicates”.
3. The program defines a class called “Program”.
4. The program defines the Main method, which is the entry point of the program.
5. The program asks the user to enter the number of elements in the array and reads the input as an integer.
6. The program declares an integer array called “numbers” with the size equal to the number entered by the user.
7. The program uses a for loop to ask the user to enter each element of the array and reads the input as integers.
8. The program declares an integer variable called “count” and assigns it a value of 0.
9. The program uses a for loop to iterate through the elements in the “numbers” array.
10. The program uses a nested for loop to compare each element with all the other elements in the array.
11. The program checks if the current element is equal to the current element in the nested loop. If they are equal, the program increments the “count” variable.
12. The program prints the total number of duplicates to the console.
13. The program waits for the user to press Enter before closing the console.
14. The program ends by returning 0 from the Main method.