/// <summary> /// Provides the ability to add an error as a Notification message with an optional error code. /// </summary> public static NotificationCollection AddError(this NotificationCollection instance, string error, string errorCode) { var notification = new Notification(error, NotificationSeverity.Error); if (errorCode.IsNotNullOrEmpty()) { notification.Code = errorCode; } instance.AddMessage(notification); return(instance); }