Delegate_Assignment

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Delegate_Assignment
{

    public partial class Form1 : Form
    {

        //Lab Assignment: Due @Thursday Jan 7th, 15
        //New Project
        //Define a delegate type that takes an array of integers and returns a double 
        //Define a method ComputeAverage to compute and return the average value of an array of integers
        //Define a method ComputeAvgOfOddNegatives to compute and return the average value of all the odd negative values in an array

        //Add a button, within the button creates a delegate object of the first method invoke it and display its results
        //Re-assignthe delegate object to the second method, Invoke it and display its results

        //Define a delegate type that takes an array of integers and returns a double 
        public delegate double AverageCalculation(int[] arr);

       
        int[] intArray = new int[20];
        Random rand = new Random();

        public Form1()
        {
            InitializeComponent();
        }

        //Define a method ComputeAverage to compute and return the average value of an array of integers
        private double ComputeAvg(int [] arr)
        {
            richTextBox1.Clear();
            int sum = 0;
            int counter = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                sum += arr[i];
                counter++;
            }
            double avg = sum / counter;
            return avg;
        }

        //Define a method ComputeAvgOfOddNegatives to compute and return the average value of all the odd negative values in an array
        private double ComputeAvgOfOddNegatives(int[] arr)
        {
            richTextBox1.Clear();

            int sum = 0;
            int counter = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i] < 0 && arr[i] % 2 != 0)
                {
                    sum += arr[i];
                    counter++;
                }
            }
            if (counter > 0)
            {
                return sum / counter;
            }

            else
            {
                return 0;
            }
        }

        private void btnCalculateAvg_Click(object sender, EventArgs e)
        {
            richTextBox1.Clear();

            AverageCalculation simpleAvg = ComputeAvg;
            double avg = simpleAvg(intArray);

            simpleAvg = ComputeAvgOfOddNegatives;
            double oddNegAvg = simpleAvg(intArray);

            richTextBox1.Text = String.Format("Average value of array is: {0}", avg);

            richTextBox1.Text += String.Format("\nThe Average of Odd Negative Value is: {0}", oddNegAvg);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            for (int i = 0; i < intArray.Length; i++)
            {
                intArray[i] = rand.Next(-100, 100);              
            }
        }
    }
}