how to get Bitsperpixel from a bitmap

Question

I have a 3rd party component which requires me to give it the bitsperpixel from a bitmap.

What's the best way to get "bits per pixel"?

My starting point is the following blank method:-

public int GetBitsPerPixelMethod( system.drawing.bitmap bitmap )
{
   //return BitsPerPixel;
}

Answer 1

Rather than creating your own function, I'd suggest using this existing function in the framework:

Image.GetPixelFormatSize(bitmap.PixelFormat)

Answer 2

var source = new BitmapImage(new System.Uri(pathToImageFile));
int bitsPerPixel = source.Format.BitsPerPixel;

The code above requires at least .NET 3.0

http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapimage.aspx

Answer 3

What about Image.GetPixelFormatSize()?