C#颜色color对象转化成rgbHTML颜色代码

public string getRandomColor()
        {
            Random r = new Random();
            var color = System.Drawing.Color.FromArgb(r.Next(255), r.Next(255), r.Next(255), r.Next(255));
            return System.Drawing.ColorTranslator.ToHtml(color);
        }

这样输出即可