Randomly draw an image

Question

4.00/5 (2 votes)

See more:

Hallo, I have array with images and i want to draw only one and if i click on button, randomly draw another.

Random random = new Random();
ArrayList myImages = new ArrayList();
private void Form1_Load(object sender, EventArgs e)
        {
            myImages.Add(Properties.Resources._0);
            myImages.Add(Properties.Resources._1);
        }
private void Form1_Paint(object sender, EventArgs e)
        {
                ?
        }
private void Button1_Click(object sender, EventArgs e)
        {
                ?
        }

Thank you for answer.

Posted 21-Feb-15 5:48am

Member 10808387

Add a Solution

Comments

CHill60 21-Feb-15 11:56am

so what is your problem?

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

DamithSL · Accepted Answer · 2015-02-21T06:15:00

Solution 1

I would have change

C#

ArrayList myImages = new ArrayList();

to generic List<t> which don't need casting and type safe[^]

C#

List<Image> myImages = new List<Image>();

then you can set random image from the list as below

C#

pictureBox1.Image = myImages[random.Next(0, myImages.Count)];

Posted 21-Feb-15 6:15am

DamithSL

Updated 21-Feb-15 12:48pm

v3

Comments

Sergey Alexandrovich Kryukov 21-Feb-15 12:39pm

5ed. You demonstrated a way of getting away from explaining all other aspect the inquirer is not likely aware of. ;-)
But this is fair enough: the initiative should come from the one who is in need...

You did not address the exact inquirer's questions though: what to do on paint event and on click. But this is a rare case when painting anything is not needed, and the second one is two trivial, but you could explain that you would advise the assignment you've shown in your sample line.

—SA

Member 10808387 21-Feb-15 13:24pm

Program write an error but I figured out. Just before myImages[random.Next(0, myImages.Count)]; you must add (Image) so the code is: pictureBox1.Image = (Image)myImages[random.Next(0, myImages.Count)]. But TY for Answer :)

Zoltán Zörgő 22-Feb-15 2:05am

If this answer helped you (most) feel free to accept it formally.