How to make an instance variables inside a class

Question

I'm learning the Windows Application Form in Visual Studio, I'm making a number guessing game where the program generates a random number. I put the random number generator inside the Button_Click method, I want the number to say the same when the program start but it change every time I click the button.

public partial class myWindow : Form
{


    public myWindow()
    {
        InitializeComponent();
    }

    private void guessButton_Click(object sender, EventArgs e)
    {

            Random random = new Random();
            int roll = random.Next(0, 99);

Where should I declare or put the random number generator and variable so it doesn't change ?

@YacoubMassad Good for a guessing game you can run one time. :) — itsme86
– itsme86, Commented Jan 27, 2016 at 22:58
Should the second button click always show the same number? And the third...? — Yacoub Massad
– Yacoub Massad, Commented Jan 27, 2016 at 23:00
Can you elaborate on this "I want the number to say the same when the program start but it change every time I click the button"? — Yacoub Massad
– Yacoub Massad, Commented Jan 27, 2016 at 23:12
@YacoubMassad - I think he wants the program to generate a random number when the game starts, but to only generate a new one after the user has successfully guessed the current number - not every time the user guesses. — Enigmativity
– Enigmativity, Commented Jan 28, 2016 at 0:46

itsme86 · Accepted Answer · 2016-01-28 00:20:15Z

2

Make it a class member:

public partial class myWindow : Form
{
    private int _roll;
    private int _numGuesses;

    public Window()
    {
        InitializeComponent();

        Random random = new Random();
        _roll = random.Next(0, 99);
    }

    private void guessButton_Click(object sender, EventArgs e)
    {
        bool isGuessCorrect = // Set this however you need to

        if (isGuessCorrect)
        {
            // They got it right!
        }
        else
        {
            _numGuesses++;
            if (_numGuesses > 9)
            {
                // Tell them they failed
            }
            else
            {
                // Tell them they're wrong, but have 10 - _numGuesses guesses left
            }
        }
    }
}

edited Jan 28, 2016 at 0:20

answered Jan 27, 2016 at 22:58

itsme86

19.6k4 gold badges44 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Tarek Alabbar Over a year ago

I hope I don't bother you much, but i want the player to have 10 chances to guess the right number. I know i have to put a for loop, but again i don't know what to put the loop.

itsme86 Over a year ago

You'll need to track the number of guess also. I'll update my answer to show what I mean.

Tarek Alabbar Over a year ago

Thank you for your help I really appreciate it.

Collectives™ on Stack Overflow

How to make an instance variables inside a class

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related