public ActionResult Edit(EnvironmentParameters aEnvParam)
        {
            var szError = string.Empty;

            if (!this.ModelState.IsValid)
            {
                return(this.RedirectToAction("Development"));
            }

            try
            {
                string szWarning = null;
                PaymentController.DecodeInfo02(aEnvParam.Password, ref szWarning);

                if (!string.IsNullOrEmpty(szWarning))
                {
                    var encryptedPasswd = PaymentController.EncriptInfo02(aEnvParam.Password, ref szError);
                    aEnvParam.Password = encryptedPasswd;
                }

                this.db.Entry(aEnvParam).State = EntityState.Modified;
                this.db.SaveChanges();

                if (aEnvParam.Active)
                {
                    var otherEnvParam =
                        this.db.EnvironmentParameters.SingleOrDefault(x => x.ParameterId != aEnvParam.ParameterId);
                    if (otherEnvParam != null)
                    {
                        otherEnvParam.Active = false;
                        this.db.Entry(otherEnvParam).State = EntityState.Modified;

                        this.db.SaveChanges();
                    }
                }
            }
            catch (Exception e)
            {
                this.ModelState.AddModelError(string.Empty, e.Message);
                return(this.View(aEnvParam));
            }

            if (string.IsNullOrEmpty(szError))
            {
                return(RedirectToAction("Development"));
            }

            this.ModelState.AddModelError(string.Empty, szError);
            return(this.View(aEnvParam));
        }