Reference to multiple objects/variables with 1 name

Question

In C#, I'm making a platform game. The terrains are pictureboxes, and with the collision systems eg. I need to have 1 name to reference to a number of selected pictureboxes, because it would be too much code to make the same function with another picturebox. So, an example, if "picturebox1" and "picturebox2" is referenced as "pictureall", then, if this code is executed:

pictureall.Visible = false;

both "picturebox1" and "picturebox2" would be invisible. So, how can I reference to (in the example) the 2 pictureboxes with 1 name?

Edit: I'm mostly going to use it in If statements. So, like, as example: if (pictureall.Visible == true) MessageBox.Show("true"); If then any picturebox is visible, it would be true.

/Viktor

Use an array or other collection so you can quickly loop over all pictureboxes — Emond
– Emond, Commented Aug 30, 2014 at 17:56

kishore V M · Accepted Answer · 2014-08-30 18:05:35Z

1

you create a custom class named Grouppictures

This will contain List of pictures as member variable
A Method SetVisibility(bool visible)
In the above method you will loop and set the visibility of all pictures
but you will call the method as GrouppicturesObj.SetVisibity(false);

answered Aug 30, 2014 at 18:05

kishore V M

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2 Comments

kishore V M Over a year ago

According to your edit .. you can still solve that by adding one more method which returns the visibility status ( which basically loops through the images it contained and checks their visibility and returns the status ) . you use in if conditions like this if(GroupPicturesObj.GetVisibility() == true)

VisualGhost Over a year ago

Thanks, you gave me an idea there.

Andre Loker · Accepted Answer · 2014-08-30 19:36:35Z

0

If you don't want to use a custom collection class as kishore V M suggests, you could put the selection of picture boxes in a collection such as a List<T> and use the available (extension) methods, e.g.

List<PictureBox> pictureBoxes = new List<PictureBox>();

// fill the list
pictureBoxes.Add(...);

// do something to all boxes in the list
pictureBoxes.ForEach(box => box.Visible = true);

// ask something about the boxes in the list
if (pictureBoxes.Any(box => box.Visible))
{
    // at least one box visible
}
// or:
if (pictureBoxes.All(box => box.Visible))
{
    // all boxes visible
}

References:

answered Aug 30, 2014 at 19:36

Andre Loker

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