Copying variables from one picturebox to another w

问题:

I would like to copy a picturebox to another picturebox, but I do not want them to change with each other.

PictureBox picbox1 = new PictureBox();
PictureBox picbox2 = picbox1;

picbox1.Visible = false; //The problem here is that picbox2.Visible will also become false

I would like to make picbox1 change without changing picbox2....

How would I be able to do that?

回答1:

Probably the best way to maintain clean code is to create an extension method, also note that your second picturebox is currently not added to controls.

public static class MyExtensions
{
    public static PictureBox CreateNewWithAttributes(this PictureBox pb)
    {
        return new PictureBox { Image = pb.Image, Width = pb.Width };
    }
}

Picturebox p2 = p1.CreateNewWithAttributes();
this.Controls.Add(p2);

More can be read on extension methods here

回答2:

use this...

PictureBox p1 = new PictureBox();
PictureBox p2 = new PictureBox();
Bitmap b = new Bitmap(p1.Image);
p2.Image = b;
p1.Visible = false;