unrecognized or unsupported array type exception in C# [duplicate]

This question already has answers here: Closed 11 years ago.

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Image conversion in OpenCV C#

WeightedImg.Bitmap.SetPixel(x, y,Color.FromArgb((int)Math.Ceiling(color * R), (int)Math.Ceiling(color * G),(int)Math.Ceiling(color * B)));

this line of code produces the exception above开发者_如何学C .. any one knows the solution ? and what does the exception mean? thanks a lot

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You need to set the alphachannel, as in *A*rgb The alphachannel set's the transparency of the color

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you really need to give us more to work on. how are those variables defined? what's the exception and stack trace print? this equivalent of what you're posting, for example, works as a charm on my machine

        Bitmap b = new Bitmap("somefile.bmp");
        double color = 1, R = 2, G = 3, B = 4;
        int x = 1, y = 1;
        b.SetPixel(x, y, Color.FromArgb((int)Math.Ceiling(color * R), (int)Math.Ceiling(color * G), (int)Math.Ceiling(color * B)));