Problem with bitmaps

Bitmap bmp = new Bitmap(80, 80);
                for (int row = 0; row < 80; row++)
                {
                    for (int col = 0; col < 80; col++)
                    {
                        // Parse the value at the current position
                        int val = data[row, col];
                        // Set the pixel color based on the value
                        if (val == 1)
                        {
                            bmp.SetPixel(col, row, Color.White);
                        }
                        else
                        {
                            bmp.SetPixel(col, row, Color.Black);
                        }
                    }
                }

                // Save the output image
                bmp.Save(OutputFileName);