Determining colour hex value for image in C#

Question

Is it possible to determine the hexadecimal colour value for an image in C#, if the image is a single block colour?

I have a load of colour chart images, and need to put them into a table with the requisite hex value attached. Unfortunately, the file name is useless to determine this.

Regards

Moo

Answer 1

I would use Bitmap.GetPixel to get the color and then convert it to hex using ColorTranslator.ToHtml.

// Load the bitmap
Bitmap bitmap = new Bitmap("test.gif");

// Get color from top left corner            
Color color = bitmap.GetPixel(0, 0);

// Convert it to hex
String htmlColor = System.Drawing.ColorTranslator.ToHtml(color);