public Captcha Generate(int codeLength = 5, string backgroundColor = "Black")
        {
            cls = new CaptchaLibrary.CaptchaLibraryClass(codeLength, "", 200, 50);
            Color selectedColor = Color.FromName(backgroundColor);

            cls.BackgroundColor = new System.Drawing.SolidBrush(selectedColor);
            if (cls.BackgroundColor == null)
            {
                cls.BackgroundColor = new System.Drawing.SolidBrush(Color.Black);
            }
            return(Get());
        }
 /// <summary>
 /// Controller Constructor
 /// </summary>
 public CaptchaController()
 {
     cls                 = new CaptchaLibrary.CaptchaLibraryClass(5, "", 200, 50);
     cls.NumOfLines      = 5;
     cls.BackgroundColor = new System.Drawing.SolidBrush(System.Drawing.Color.Black);
 }