Find image format using Bitmap object in C#

Question

I am loading the binary bytes of the image file hard drive and loading it into a Bitmap object. How do i find the image type[JPEG, PNG, BMP etc] from the Bitmap object?

Answer 1

The simplest method was offered by Cesare Imperiali as this:

var format = new ImageFormat(Image.FromFile(myFile).RawFormat.Guid);

However, the .ToString() for a .jpg returns "[ImageFormat: b96b3cae-0728-11d3-9d7b-0000f81ef32e]" instead of "Jpeg". If that matters to you, here is my solution:

public static class ImageFilesHelper
{
    public static List ImageFormats =>
        typeof(ImageFormat).GetProperties(BindingFlags.Static | BindingFlags.Public)
          .Select(p => (ImageFormat)p.GetValue(null, null)).ToList();

    public static ImageFormat ImageFormatFromRawFormat(ImageFormat raw) =>
        ImageFormats.FirstOrDefault(f => raw.Equals(f)) ?? ImageFormat.Bmp;

}
// usage:
var format = ImageFilesHelper.ImageFormatFromRawFormat(Image.FromFile(myFile).RawFormat);