Question

I have an Image object, img, and i need to save it into a memory stream.

Save method has this signature:

Image.Save (Stream, ImageCodecInfo, EncoderParameters)

but i don’t know what i shoud provide in parameters 2 and 3.

I workaround problem using BinaryFormmater serialization, but i would like use the most appropriate method.

Thank you for any help!

Answer 1

There is a simpler overload: Image.Save(Stream, ImageFormat). The second parameter lets you pick the format you want to save the image on, like BMP, PNG, or JPEG.

image.Save(stream, ImageFormat.Bmp); // if you need to access the pixels, perhaps
image.Save(stream, ImageFormat.Png); // lossless compression (good for drawings)
image.Save(stream, ImageFormat.Jpeg); // lossy but powerful compression (good for photos)