Read a Bitmap subsection from disk in C #

Question

I am writing some kind of card software for my smartphone and have encountered a problem because of which I do not want to load all the (large) image files into memory when only a part is displayed.

Is there a way to read only the subsection (visible part) of a large image, given that you know the offsets and widths of x and y? I know that perhaps this is possible by reading the file byte at a time, but I'm not sure how to do this.

Thanks Nico

Answer 1

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Answer 2

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Answer 3

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Answer 4

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Answer 5

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public BitmapCropBitmap(BitMap fullBitmap, Rectangle rectangle)
{
  return proBitmap.clone(fullBitmap, rectangle, fullBitmap.PixelFormat);
}