Question

Must be done in C# please! Thanks!

In this assignment you will create a program named Test Scores that displays the average of all tests; average midterm score; average final score; and displays the midterm or final score of a particular student. Create a class level two dimensional integer array named Grades initialized with the following data: 897 242 301 987 116 450 865 128 992 109 88 75 94 70 90 87 81 79 97 79 78 80 92 81 93 77 75 88 76 85 . This array holds the midterm and final score for 10 students. The first column of data is student number, the second column is their midterm grade, and the third column is their final grade. On your form, use radio buttons to choose from the following options: Display Average of all tests (midterm and final). Be careful – the first column is just student number! • Display Average Midterm score Display Average Final score • Find midterm score of a selected student • Find final score of a selected student Add a list box or combo box to the form where the user can select the student number for displaying the midterm or final score for the student. In the form load event, loop through the items in the first column of the array and load the list or combo box with the student IDs in the first column!! (Don't "hard code” each number.) All results should display as decimal values. (If the average is 82.5, display 82.5, NOT 82 or 83!!!) A "display button” will determine which radio button is selected and display the appropriate data in a message box along with a message stating what the data represents. (continued on next page...)

Answer 1

Solution:

STEP by Step Procedure:

Code For frmTestAverage

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 Test_Scores
{
public partial class frmTestAverage : Form
{

public static int[,] Grades = new int[10, 3]{
{897,88,78},{ 242,75,80},{301,94,92},{987,70,81},{116,90,93},{450,87,77},{865,81,75},{128,79,88},{992,97,76},{109,79,85}
};

public static double Averageofall,AverageofMid,AverageofFinal,Studentmid,studentfinal;

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
label2.Text = "";
}

private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
label2.Text = "";
}

private void radioButton3_CheckedChanged(object sender, EventArgs e)
{
label2.Text = "";
}

private void radioButton4_CheckedChanged(object sender, EventArgs e)
{
label2.Text = "";
}

private void radioButton5_CheckedChanged(object sender, EventArgs e)
{
label2.Text = "";
}

public frmTestAverage()
{
InitializeComponent();
}

private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
label2.Text = "";

}

private void frmTestAverage_Load(object sender, EventArgs e)
{
radioButton1.Checked = true;
for (int i = 0; i < Grades.GetLength(0); i++)
{
comboBox1.Items.Add(new { Text = Grades[i, 0], Key = Grades[i, 0] });
}
comboBox1.DisplayMember = "Text";
comboBox1.ValueMember = "Key";
comboBox1.SelectedIndex = 0;

}

private void btnDisplay_Click(object sender, EventArgs e)
{
  
if (radioButton1.Checked==true)
{
for (int i = 0; i < Grades.GetLength(0); i++)
{
double Averageofarow = (Grades[i, 1] + Grades[i, 2]) / 2;
Averageofall = Averageofall + Averageofarow;

}

label2.Text = Convert.ToString(Averageofall/10);
}
else if(radioButton2.Checked == true)
{
for (int i = 0; i < Grades.GetLength(0); i++)
{
AverageofMid = AverageofMid + Grades[i, 1];
}
AverageofMid = AverageofMid / 10;
label2.Text = Convert.ToString(AverageofMid);
}
else if (radioButton3.Checked == true)
{
for (int i = 0; i < Grades.GetLength(0); i++)
{
AverageofFinal = AverageofFinal + Grades[i, 2];
}
AverageofFinal = AverageofFinal / 10;
label2.Text = Convert.ToString(AverageofFinal);
}
else if(radioButton4.Checked == true)
{
if (comboBox1.SelectedIndex != 0)
{

Studentmid = Grades[comboBox1.SelectedIndex - 1, 1];
label2.Text = Studentmid.ToString();
  
}
else
{
MessageBox.Show("Please select a student");
}
}
else if (radioButton5.Checked == true)
{
if (comboBox1.SelectedIndex != 0)
{

studentfinal = Grades[comboBox1.SelectedIndex - 1, 2];
label2.Text = studentfinal.ToString();

}
else
{
MessageBox.Show("Please select a student");
}
}
}
}
}

CODE IN EDITOR

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...If you have any further doubts please ask me through comment box...