Question

C# Visual Studio -The local driver's license office has asked you to create an application that grades the written portion of the driver's license exam. The exam has 20 multiple choice questions. Here are the correct answers: 1. B 2. D 3. A 4. A 5. C 6. A 7. B 8. A 9. C 10. D 11. B 12. C 13. D 14. A 15. D 16. C 17. C 18. B 19. D 20. A Your program should store these correct answers in an array. The program should read the student's answer's for each of the 20 questions from a text file and store the answers in an another array. (Create your own text file to test the application). After the student's answers have been read from the file, the program should display a message indicating whether the student passed or failed the exam. (A student must correctly answer 15 of the 20 questions to pass the exam). It should then display the total number of correctly answered questions, the total number of incorrectly answered questions, and a list showing the question numbers of the incorrectly answered questions C# only please, please include form instructions with pictures of forms and labels for textboxes and buttons

Answer 1

Code

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;
using System.IO;
namespace License_test_result
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
string[] answeKey = { "B", "D", "A", "A", "C", "A", "B", "A", "C", "D", "B", "C", "D", "A", "D", "C", "C", "B", "D", "A" };
  
private void btnResult_Click(object sender, EventArgs e)
{
string filename = txtFilename.Text;
string aLine;
string []studentAnswer=new string[20];
int count=0,correctCount=0,incorrectCount=0;
try
{
string path=Application.StartupPath+"\\"+filename;
var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read);
using (var streamReader = new StreamReader(fileStream, Encoding.UTF8))
{
string line = string.Empty;
do
{
line = streamReader.ReadLine();
if (line != null)
{
studentAnswer[count] = line;
count++;
}

} while (line != null);
}
for (int i = 0; i < 20; i++)
{
if (answeKey[i] == studentAnswer[i])
correctCount++;
else
{
incorrectCount++;
lstIncorrectAns.Items.Add((i + 1));
}
}
txtCorrectAns.Text = correctCount.ToString();
txtIncorrectAns.Text = incorrectCount.ToString();
if (correctCount >= 15)
txtResult.Text = "Pass";
else
txtResult.Text = "Fail";
}
catch(Exception)
{
MessageBox.Show("File not found");
}

}

private void button1_Click(object sender, EventArgs e)
{
txtResult.Clear();
txtIncorrectAns.Clear();
txtFilename.Clear();
txtCorrectAns.Clear();
lstIncorrectAns.Items.Clear();
}

private void button2_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
Form1.Designer,cs

namespace License_test_result
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;

/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}

#region Windows Form Designer generated code

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.txtFilename = new System.Windows.Forms.TextBox();
this.btnResult = new System.Windows.Forms.Button();
this.txtCorrectAns = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.txtIncorrectAns = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.txtResult = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.lstIncorrectAns = new System.Windows.Forms.ListBox();
this.label5 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label1.Location = new System.Drawing.Point(89, 51);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(164, 15);
this.label1.TabIndex = 0;
this.label1.Text = "Enter the test file name: ";
//
// txtFilename
//
this.txtFilename.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.txtFilename.Location = new System.Drawing.Point(268, 48);
this.txtFilename.Name = "txtFilename";
this.txtFilename.Size = new System.Drawing.Size(129, 21);
this.txtFilename.TabIndex = 1;
//
// btnResult
//
this.btnResult.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnResult.Location = new System.Drawing.Point(44, 370);
this.btnResult.Name = "btnResult";
this.btnResult.Size = new System.Drawing.Size(75, 23);
this.btnResult.TabIndex = 2;
this.btnResult.Text = "Show Result";
this.btnResult.UseVisualStyleBackColor = true;
this.btnResult.Click += new System.EventHandler(this.btnResult_Click);
//
// txtCorrectAns
//
this.txtCorrectAns.Enabled = false;
this.txtCorrectAns.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.txtCorrectAns.Location = new System.Drawing.Point(268, 87);
this.txtCorrectAns.Name = "txtCorrectAns";
this.txtCorrectAns.Size = new System.Drawing.Size(54, 21);
this.txtCorrectAns.TabIndex = 4;
//
// label2
//
this.label2.AutoSize = true;
this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label2.Location = new System.Drawing.Point(99, 90);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(145, 15);
this.label2.TabIndex = 3;
this.label2.Text = "Total correct Answer :";
//
// txtIncorrectAns
//
this.txtIncorrectAns.Enabled = false;
this.txtIncorrectAns.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.txtIncorrectAns.Location = new System.Drawing.Point(268, 130);
this.txtIncorrectAns.Name = "txtIncorrectAns";
this.txtIncorrectAns.Size = new System.Drawing.Size(54, 21);
this.txtIncorrectAns.TabIndex = 6;
//
// label3
//
this.label3.AutoSize = true;
this.label3.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label3.Location = new System.Drawing.Point(89, 133);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(164, 15);
this.label3.TabIndex = 5;
this.label3.Text = "Total incorrect answers: ";
//
// txtResult
//
this.txtResult.Enabled = false;
this.txtResult.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.txtResult.Location = new System.Drawing.Point(269, 173);
this.txtResult.Name = "txtResult";
this.txtResult.Size = new System.Drawing.Size(54, 21);
this.txtResult.TabIndex = 8;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label4.Location = new System.Drawing.Point(196, 180);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(56, 15);
this.label4.TabIndex = 7;
this.label4.Text = "Result: ";
//
// lstIncorrectAns
//
this.lstIncorrectAns.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lstIncorrectAns.FormattingEnabled = true;
this.lstIncorrectAns.ItemHeight = 15;
this.lstIncorrectAns.Location = new System.Drawing.Point(268, 222);
this.lstIncorrectAns.Name = "lstIncorrectAns";
this.lstIncorrectAns.Size = new System.Drawing.Size(55, 94);
this.lstIncorrectAns.TabIndex = 9;
//
// label5
//
this.label5.AutoSize = true;
this.label5.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label5.Location = new System.Drawing.Point(73, 222);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(183, 15);
this.label5.TabIndex = 10;
this.label5.Text = "Incorrect Question Number:";
//
// button1
//
this.button1.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.button1.Location = new System.Drawing.Point(212, 370);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 11;
this.button1.Text = "Clear";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.button2.Location = new System.Drawing.Point(380, 370);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 12;
this.button2.Text = "Exit";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(506, 416);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.label5);
this.Controls.Add(this.lstIncorrectAns);
this.Controls.Add(this.txtResult);
this.Controls.Add(this.label4);
this.Controls.Add(this.txtIncorrectAns);
this.Controls.Add(this.label3);
this.Controls.Add(this.txtCorrectAns);
this.Controls.Add(this.label2);
this.Controls.Add(this.btnResult);
this.Controls.Add(this.txtFilename);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();

}

#endregion

private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtFilename;
private System.Windows.Forms.Button btnResult;
private System.Windows.Forms.TextBox txtCorrectAns;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox txtIncorrectAns;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox txtResult;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.ListBox lstIncorrectAns;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
}
}

Design

output

Student1.txt

If you have any query regarding the code please ask me in the comment i am here for help you. Please do not direct thumbs down just ask if you have any query. And if you like my work then please appreciates with up vote. Thank You.