AnalysisImageClick.OCRTools.detectEndFirtRedLine C# (CSharp) Method

        private static int detectEndFirtRedLine(Bitmap bmp, int initRedY)
        {
            int redY = -1;
            try {
                for (int h = initRedY; h < bmp.Height; h++){
                    Color c = bmp.GetPixel(0, h);
                    if (c.R != 255){
                        bool isRedLine = true;
                        for (int w = 0; w < bmp.Width; w++) {
                            c = bmp.GetPixel(w, h-1);
                            if (c.R != 255) {
                                isRedLine = false;
                                break;
                            }
                        }
                        if (isRedLine){
                            redY = h - 1;
                            break;
                        }
                    }
                }
            }catch(Exception e){}
            return redY;
        }