After panning an image in a picture box, how to save only the visible image

Question

I have a C# program where I am displaying a pictureBox of size 600x450. I have an image of a higher resolution that I am displaying in this window. After I pan the image, I want to save only the visible picture in the window. When I use pictureBox.Image.Save(...), it saves the whole picture, not just the visual portion? How can I do this?

Answer 1

Try to use this.

using (Bitmap bitmap = new Bitmap(YourPictureBox.ClientSize.Width,
                               YourPictureBox.ClientSize.Height))
{
   YourPictureBox.DrawToBitmap(bitmap, YourPictureBox.ClientRectangle);
   bitmap.Save(yourfilename, ImageFormat.Png);
}