public GUI()
{
// make UI controls part of the window
this.Controls.Add(statement);
this.Controls.Add(op1);
this.Controls.Add(op2);
this.Controls.Add(op3);
this.Controls.Add(op4);
this.Controls.Add(next);
this.Controls.Add(previous);
statement.Location = new Point(10, 10);
op1.Location = new Point(10, 50);
op2.Location = new Point(10, 90);
op3.Location = new Point(10, 130);
op4.Location = new Point(10, 170);
next.Location = new Point(10, 210);
previous.Location = new Point(100, 210);
next.Text = "Next";
previous.Text = "Previous";
next.Click += NextButtonClicked; // registering the event handler
// so that the event handler gets called when button is clicked
previous.Click += PreviousButtonClicked; // registering the event handler
// so that the event handler gets called when button is clicked
Question question = tl.GetNextQuestion();
DisplayQuestion(question);
}
public void StartTest()
{
TestLogic tl = new TestLogic();
while (true)
{
Question question = tl.GetNextQuestion();
if (question == null)
{
break; // test is over
}
// Display one question at a time
Console.Clear();
Console.WriteLine(question.Statement);
Console.WriteLine("1: " + question.Op1);
Console.WriteLine("2: " + question.Op2);
Console.WriteLine("3: " + question.Op3);
Console.WriteLine("4: " + question.Op4);
// take the user's choice
Console.Write("Select an option: ");
int choice = Convert.ToInt32(Console.ReadLine());
tl.CalculateUserMarks(choice);
}
// finally display usermarks out of total marks
Console.Clear();
Console.WriteLine("You obtained {0} out of {1}", tl.GetUserMarks(), tl.GetTotalMarks());
}
public void Show()
{
Console.WriteLine("Please wait while we load the questions from the server....");
TestLogic testLogic = new TestLogic(); // long lived object
// 1. Object is created with instance data members in it
// 2. constructor is called with the ref. of the object
// 3. reference of the object is stored in testLogic reference variable
while (true)
{
Question question = testLogic.GetNextQuestion();
// question is a reference variable that receives reference of the Question object
if (question != null)
{
Console.Clear();
DisplayQuestion(question);
int option = this.GetOptionFromUser();
testLogic.CheckAnswer(option);
}
else
{
break;
}
}
Console.Clear();
Console.WriteLine($"You obtained {testLogic.UserMarks} out of {testLogic.TotalMarks}");
Console.ReadLine();
}
// NO instance Data Members
public void Start(/*ConsoleUI this = referance of calling object */)
{
TestLogic logic = new TestLogic();
while (true)
{
Question question = logic.GetNextQuestion();
if (question == null)
{
break;
}
Console.WriteLine($"Statement : {question.Statement}");
Console.WriteLine($"Option1 : {question.Option1}");
Console.WriteLine($"Option2 : {question.Option2}");
Console.WriteLine($"Option3 : {question.Option3}");
Console.WriteLine($"Option4 : {question.Option4}");
}
}
public void Show()
{
TestLogic testLogic = new TestLogic();
while (true)
{
Question question = testLogic.GetNextQuestion();
if (question != null)
{
Console.WriteLine(question.Statement);
Console.WriteLine(question.Option1);
Console.WriteLine(question.Option2);
Console.WriteLine(question.Option3);
Console.WriteLine(question.Option4);
}
else
{
break;
}
}
}
