App_Code.Controls.RecaptchaControl.Validate C# (CSharp) Method

        public void Validate()
        {
            if (this.skipRecaptcha)
            {
                this.recaptchaResponse = RecaptchaResponse.Valid;
            }
            else
            {
                var validator = new RecaptchaValidator
                    {
                       PrivateKey = this.privateKey, RemoteIP = this.Page.Request.UserHostAddress
                    };
                if (String.IsNullOrEmpty(this.RecaptchaChallengeValue) &&
                    String.IsNullOrEmpty(this.RecaptchaResponseValue))
                {
                    validator.Challenge = this.Context.Request.Form[RecaptchaChallengeField];
                    validator.Response = this.Context.Request.Form[RecaptchaResponseField];
                }
                else
                {
                    validator.Challenge = this.RecaptchaChallengeValue;
                    validator.Response = this.RecaptchaResponseValue;
                }

                this.recaptchaResponse = validator.Validate();
            }
        }