Retrieve all pictureboxes?

Sam M

Hi guys, new to the forum :)

I have a c# program that consists of only one form, and am looking for a way of retrieving an array or list of all the picture boxes in that form.

I am not really new to c# but have only increased my knowledge so far as to accommodate assignment work requirements, i have not 'learnt' the language per se.

I blundered in and attempted to use this.componants only to find that, visual studio (which is what i am using) informed me there was no object reference in that statement, by which i assume it means the form, but i'm obviously not sure ;)

Ideally it would be some form of 'foreach' however i would appreciate guidance onto any method :D

Anyone have any ideas how i would go about doing this? Or is it even possible?

Thankyou.

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs15y ago
What specific line gets that error? You said you are using this.componants but I don't see that in your code.
Frogleg15y ago

PictureBox[] pic = new PictureBox[9];
put "setupPics();" in form load event
public void setupPics()
{
pic[0] = pictureBox1;
pic[1] = pictureBox2;
pic[2] = pictureBox3;
pic[3] = pictureBox4;
pic[4] = pictureBox5;
pic[5] = pictureBox6;
pic[6] = pictureBox7;
pic[7] = pictureBox8;
pic[8]= pictureBox9;
}
private void button2_Click(object sender, EventArgs e)
{
foreach (PictureBox p in pic)
{
p.Image = null;
}
}
Sam M15y ago
Hi Crish, thanks for the reply :)

However, unless I am being stupid, that code appears to be in VB ;)

Any chance you have a c# example?

Thanks :D
Crish15y ago
Hi

you can check this below code to solve your issue.

http://www.xtremevbtalk.com/showthread.php?t=143177
Sam M15y ago
Hi Subhendu

Ah of course, sorry, i normally post on HTML forums so wasn't sure of what would be useful regarding c# :)

Its just a basic tic-tac-toe game, all that is in the form is 9 picture boxes the r1l = row1left and r1c = row1center etc :) they represent the 9 squares (made by the picture boxes) that make up the tic-tac-toe.

Basically, on the click of the btnReset i would like it to retrieve all the picture boxes and put them into a list or array.

Its not hugely important to the functionality, but i'm mainly making this program to improve my knowledge of deeper c# concepts :D

Cheers :)

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace AI { public partial class Form1 : Form { bool isCross = false; public Form1() { InitializeComponent(); } private void r1r_Click(object sender, EventArgs e) { changeImage(r1r); } private void changeImage(PictureBox p) { if (p.BackgroundImage != null) { return; } if (isCross) { p.BackgroundImage = new Bitmap("crossbg.jpg"); isCross = false; } else { p.BackgroundImage = new Bitmap("circle.gif"); isCross = true; } } private void r1c_Click(object sender, EventArgs e) { changeImage(r1c); } private void r1l_Click(object sender, EventArgs e) { changeImage(r1l); } private void r2l_Click(object sender, EventArgs e) { changeImage(r2l); } private void r2c_Click(object sender, EventArgs e) { changeImage(r2c); } private void r2r_Click(object sender, EventArgs e) { changeImage(r2r); } private void r3l_Click(object sender, EventArgs e) { changeImage(r3l); } private void r3c_Click(object sender, EventArgs e) { changeImage(r3c); } private void r3r_Click(object sender, EventArgs e) { changeImage(r3r); } private void btnReset_Click(object sender, EventArgs e) { } } }
Subhendu De15y ago
If possible, could you post the code. It would help me to give you the actual codebase that you are looking for.

Thanks.....