Question

Create a window form that will prompt the user to enter any 4 numbers and it will return sorted output. Store values in a list and use Add method to add values visual studio 2019 C#

Answer 1

Below is the required code. It is explained inside the code using comments.

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace Numbers
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnSort_Click(object sender, EventArgs e)
        {
            // create a list of numbers
            List<int> numbers = new List<int>();

            // read numbers from textboxes and add to the list
            numbers.Add(Convert.ToInt32(txtNum1.Text));
            numbers.Add(Convert.ToInt32(txtNum2.Text));
            numbers.Add(Convert.ToInt32(txtNum3.Text));
            numbers.Add(Convert.ToInt32(txtNum4.Text));

            // sort the list
            numbers.Sort();

            // create output string
            string output = "Sorted: ";
            for (int i = 0; i < numbers.Count; i++)
            {
                // append numbers to output string
                output += numbers[i] + " ";
            }

            // display the sorted numbers
            lblSorted.Text = output;
        }
    }
}

Please note, the name of controls on form are:

Textboxes: 'txtNum1', 'txtNum2', 'txtNum3', 'txtNum4'

Button: 'btnSort'

Below is the sample output:

Numbers Program - O X Enter number 1: Enter number 2: Enter number 3: Enter number 4: 4 35 27 Sort

. Numbers Program - O X Enter number 1: Enter number 2: Enter number 3: Enter number 4 85 4 35 27 Sort Sorted: 4 27 35 85

This completes the requirement. Let me know if you have any questions.

Thanks!