C＃Win。 表单-检索图像时内存不足

Question

Brief

I want to display a PNG image in my PictureBox. At runtime the software asks the path of the image from the user.

Solution i am using

This is my code uptill now

picturebox1.Image = null;
OpenFileDialog ofDlg = new OpenFileDialog();
ofDlg.Filter = "Image files|*.png";
if (DialogResult.OK == ofDlg.ShowDialog())
{
     picturebox1.Image = Image.FromFile(ofDlg.FileName); //Out of memory.
}

Problem

It was all working fine uptill now untill i got an image which was of 25.7 MB (8827 x 11350 pixels) .

I know you might all suggest that i should get a lighter version of this image BUT the problem is that this software is used to zoom the image to view the image in detail. So i cannot resize it at any cost.

Now whenever i run the above code it gives me the exception

Out of memory.

I do not understand what is the problem here because i have 8GB of RAM installed on my PC then how it is out of memory? Below is my CPU usage at the time when this error message appeared.

Answer 1

Follow the sugestions of all the comments, ie Make sure you are in 64 bit

But you need to also make sure you are disposing your images or you will run out of memory sooner or later anyway. The following is just an exmaple

if(picturebox1.Image != null)
   picturebox1.Image.Dispose();

picturebox1.Image = null;

OpenFileDialog ofDlg = new OpenFileDialog();
ofDlg.Filter = "Image files|*.png";
if (DialogResult.OK == ofDlg.ShowDialog())
{
     picturebox1.Image = Image.FromFile(ofDlg.FileName); //Out of memory.
}