Question

In the "Go" button add 15 random numbers in the array using a random number generator. Remove the call to "SetToZero" and the code following. Remove the "SetToZero" method. Add Access Keys of your choice Assign an accept button Assign cancel button (Exit) Add a Button "Find Max" Write an appropriately named method that Accepts the array Finds the largest int and returns the value "Find Max" button click Calls above method Opens a MessageBox to display the returned value Add a Button "Find Min" Write an appropriately named method that Accepts the array Finds the smallest int and returns the value "Find Min" button click Calls above method Opens a MessageBox to display the returned value Code below: public partial class Form1 : Form { public Form1() { InitializeComponent(); } // Click event handler for the goButton control. private void goButton_Click(object sender, EventArgs e) { // Create an int array. int[] numbers = { 1, 2, 3 }; // Display the array in the list box. outputListBox.Items.Add("The array's original contents:"); foreach (int number in numbers) { outputListBox.Items.Add(number); } // Pass the array to the SetToZero method. SetToZero(numbers); // Display the array in the list box again. outputListBox.Items.Add(""); outputListBox.Items.Add("After calling SetToZero:"); foreach (int number in numbers) { outputListBox.Items.Add(number); } } // The SetToZero method accepts an int array as an // argument and sets its elememts to 0. private void SetToZero(int[] iArray) { for (int index = 0; index < iArray.Length; index++) { iArray[index] = 0; } } // Click event handler for the exitButton control. private void exitButton_Click(object sender, EventArgs e) { // Close the form. this.Close(); } private void FindMaxButton_Click(object sender, EventArgs e) { } private void FindMinButton_Click(object sender, EventArgs e) { } } }

Answer 1

C # application to generate 15 random numbers and find max and min values

Step1:

Create a C# windows application with input controls buttons, list box as shown below.

Step2:

Set the properties of the control of the form as shown in below table

Step3:

//Source code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
// Create an int array of size,15
int[] numbers =new int[15];

public Form1()
{
InitializeComponent();
}

/*Double click the Exit button and clos the form*/
private void exitButton_Click(object sender, EventArgs e)
{
this.Close();
}
/*Double click the Go button and write below code to add 15 random numbers
in a range of 1 to 100*/
private void goButton_Click(object sender, EventArgs e)
{
//Clear the list box before adding random numbers to the list
outputListBox.Items.Clear();
// Display the array in the list box again.
outputListBox.Items.Add("");
outputListBox.Items.Add("15 Random Numbers");
// Display the array in the list box.   
Random random = new Random();
for (int index = 0; index < numbers.Length; index++)
{
int randomNumber = random.Next(0, 100);
numbers[index] = randomNumber;
outputListBox.Items.Add(randomNumber);
}   
}
/*
* Double click the FindMax Button and write below code to find
* maximum value in the array.
*/
private void FindMaxButton_Click(object sender, EventArgs e)
{
//Assume that first value is the max value
int maxValue = numbers[0];
for (int index = 1; index < numbers.Length; index++)
{
//update the maxValue
if (numbers[index] > maxValue)
maxValue = numbers[index];
}
//Display the Max Value in a message box
MessageBox.Show("Max value : " + maxValue,
"MessageBox",
MessageBoxButtons.OK,
MessageBoxIcon.Information );
}//end of the method, FindMaxButton_Click

/*
* Double click the FindMin Button and write below code to find
* minimum value in the array.
*/
private void FindMinButton_Click(object sender, EventArgs e)
{
//Assume that first value is the min value
int minValue = numbers[0];
for (int index = 1; index < numbers.Length; index++)
{
//update the minValue
if (numbers[index] < minValue)
minValue = numbers[index];
}
//Display the min Value in a message box
MessageBox.Show("Min value : " + minValue,
"MessageBox",
MessageBoxButtons.OK,
MessageBoxIcon.Information);

} //end of the method, FindMinButton   
}
}

Step4:

Run the program, press F5

Press, Go button

Press "Find Max"

Click on OK

Press the Min button