I have a test with 10 questions. When I resolve the test for the first time my questions.Count=10; When I resolve the test for the second time my questions.Count=20; 

That's bad, because when I resolve the test for the second or third time my quiz repeats questions (I think each time I resolve a quiz, the program reads the data from my file all over again and add it to my collection. )

I have

Collection<question> = questions new Collection<question> (); 

 public partial class Form3 : Form

1.I have a collection for questions

                               Collection<question> questions = new Collection<question>();
and also a                

                                public class questions() {......}

The ImageList is from the Toolbox. The pictures from the ImageList appear in a PictureBox when I press the button Next_question.I don't have any collection for ImageList.

Should I create a collection for ImageList? What should I have in this collection?

2.For

public class TestQuestion
{

}

How could I give to this class "Image" and "Question" properties ?

I am sorry again if my questions are stupid.Thanks for understanding!

I have a problem with my c# program.

I have a test with 10 questions.And also , I have 10 images added into an ImageList.My questions are randomly selected to be displayed for each quiz I resolve. I would like to have each question with its picture. How could I make a correlation between current_question and its picture from ImageList? 

Thank you so much!

I wrote a test questions and I used a timer.But a have a problem with it.

Even if I finish the test before the time is up, the timer continues to go on.And it happens to show me the message "Time is up" while I'm resolving another quiz.  

(I mention that even if it appears   MessageBox.Show("Time is up")  it doesn't affect the timer in the other quiz.That timer continues to go on)

 I made a collection for the questions.And at the end of the questions I have something like  

if (number_of_the_question > questions.Count)
{
MessageBox.Show("points: " + points);
}

Is it a possibility to make a corelation between message box and the stopping of the timer ?

Or, is there any way to make timer to stop if I finish the test before the time is up?

Thank you.

I need your help.

I know that when i press double click to a button in c#, it appears its code: 

private void button1_Click(object sender, EventArgs e)
{... }

But what shall I do to appear this:

private void button1_Click_1(object sender, EventArgs e)
{...}

I mention that if I simply write

private void button1_Click_1(object sender, EventArgs e)
{...}

     in the program, it doesn't have any effect.

Thanks a lot!