How To Make a C# Quiz Project Using Visual Studio
In This C# Tutorial We Will See How To Create a Simple Quiz App With Windows Form Using Csharp Programming Language And Visual Studio Editor.
Project 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.Threading.Tasks;
using System.Windows.Forms;
namespace Quiz_Application
{
public partial class Quiz_Form : Form
{
public Quiz_Form()
{
InitializeComponent();
}
// create an array of questions
string[] questions = { "200 - 173 = ?", "100 + 1000 = ?", "300 x 50 = ?", "400 / 10 = ?", "100 - 100 = ?", };
// create an array of options
// 5 questions
// 5 options
// the last option will be the correct answer
// and we will use it to check if the user selected the correct answer
string[,] options = new string[5, 5] {{"100","123","27","28","27"},
{"1100","500","900","2000","1100"},
{"1700","15000","20000","30000","15000"},
{"4","4000","400","40","40"},
{"0","1","90","100","0"}};
int index = 0, correct = 0;
// create a function to check if the user has selected the correct answer
public void checkAnswer(RadioButton rbt)
{
// the 4th item(we start from 0) is the correct answer in every question
if(rbt.Text.Equals(options[index,4]))
{
correct++;
// you can make the correct answer become green
// and the wrang anwer red
rbt.BackColor = Color.Green;
}
else
{
rbt.BackColor = Color.Red;
}
index++;
// disable radiobuttons
setEnable(false);
}
// create a function to uncheck radiobuttons
public void uncheck()
{
radioButtonOption_1.Checked = false;
radioButtonOption_2.Checked = false;
radioButtonOption_3.Checked = false;
radioButtonOption_4.Checked = false;
}
// create a function to change radiobuttons backcolor and color
public void resetRadio()
{
// we are gonna use the foreach loop
// the color change automatically when disabled
foreach(Control c in this.Controls)
{
if(c is RadioButton)
{
RadioButton rdb = (RadioButton)c;
rdb.BackColor = Color.White;
}
}
}
// create a function to enable/disable radiobuttons
public void setEnable(Boolean yes_or_no)
{
radioButtonOption_1.Enabled = yes_or_no;
radioButtonOption_2.Enabled = yes_or_no;
radioButtonOption_3.Enabled = yes_or_no;
radioButtonOption_4.Enabled = yes_or_no;
}
private void Quiz_Form_Load(object sender, EventArgs e)
{
// call the button click even
button_Next.PerformClick();
}
private void button_Next_Click(object sender, EventArgs e)
{
resetRadio();
if (button_Next.Text.Equals("Restart The Quiz"))
{
index = 0;
correct = 0;
richTextBox_Question.BackColor = Color.White;
richTextBox_Question.ForeColor = Color.Black;
button_Next.Text = "Next";
}
if(index == questions.Length)
{
richTextBox_Question.Text = "Your Score:" + correct + " / " + questions.Length;
if(correct >= (float)questions.Length/2)
{
richTextBox_Question.BackColor = Color.Green;
richTextBox_Question.ForeColor = Color.White;
}
else
{
richTextBox_Question.BackColor = Color.Red;
richTextBox_Question.ForeColor = Color.White;
}
button_Next.Text = "Restart The Quiz";
}
else
{
// enable radiobuttons
setEnable(true);
// uncheck radiobuttons
uncheck();
// display the question
richTextBox_Question.Text = questions[index];
// display options
radioButtonOption_1.Text = options[index, 0];
radioButtonOption_2.Text = options[index, 1];
radioButtonOption_3.Text = options[index, 2];
radioButtonOption_4.Text = options[index, 3];
if(index == questions.Length - 1)
{
button_Next.Text = "Finish And See Your Results";
}
}
}
private void radioButtonOption_1_Click(object sender, EventArgs e)
{
checkAnswer(radioButtonOption_1);
}
private void radioButtonOption_2_Click(object sender, EventArgs e)
{
checkAnswer(radioButtonOption_2);
}
private void radioButtonOption_3_Click(object sender, EventArgs e)
{
checkAnswer(radioButtonOption_3);
}
private void radioButtonOption_4_Click(object sender, EventArgs e)
{
checkAnswer(radioButtonOption_4);
}
}
}
///////////////OUTPUT:
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