private void MarkAsLastRequest()
 {
     File.WriteAllText(this._licenseCheckFilePath, this.GetHashedValue(AspNetZeroLicenseChecker.GetLicenseExpiredString()));
 }
        private bool CheckedBefore()
        {
            if (!File.Exists(this._licenseCheckFilePath))
            {
                return(false);
            }
            string licenseCheckDate = this.GetLastLicenseCheckDate();

            if (this.GetHashedValue(AspNetZeroLicenseChecker.GetTodayAsString()) == licenseCheckDate || this.GetHashedValue(AspNetZeroLicenseChecker.GetLicenseExpiredString()) == licenseCheckDate)
            {
                return(true);
            }
            File.Delete(this._licenseCheckFilePath);
            return(false);
        }