public LicensingViewModel() { CustomerId = ConfigurationHelper.GetConfigurationValue(ConfigurationConstants.CustomerId); SubscriptionKey = ConfigurationHelper.GetConfigurationValue(ConfigurationConstants.SubscriptionKey); string expiryDateString = ConfigurationHelper.GetConfigurationValue(ConfigurationConstants.ExpiryDate); ExpiryDate = !DateTime.TryParse(expiryDateString, out expiryDate) ? DateTime.Now : expiryDate; RemainDays = ExpiryDate.Subtract(DateTime.Today).Days; if (RemainDays < 0) { RemainDays = 0; } }