--- title: Event log --- > Agent instructions: > **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown. > > - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version. > - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt). List of examples: ### Logging events ```csharp IEventLogService eventLog = Service.Resolve(); // In case of database outage, the system buffers all logged events in-memory until the database is available. // You do not need to buffer or check for database availability in custom code. // Logs an information event into the event log eventLog.LogInformation("API Example Info", "APIEXAMPLE", eventDescription: "Test information event."); // Logs a warning event into the event log eventLog.LogWarning("API Example Warning", "APIEXAMPLE", eventDescription: "Test warning event."); // Logs an error event into the event log eventLog.LogError("API Example Error", "APIEXAMPLE", eventDescription: "Test error event."); // Logs an exception into the event log eventLog.LogException("API Example Exception", "APIEXAMPLE", new Exception(), additionalMessage: "Test exception event."); ``` [> Back to list of examples](#toc) ### Logging events using LogEvent ```csharp IEventLogService eventLog = Service.Resolve(); // Prepares an EventLogData object that holds all information about the event being logged EventLogData eventData = new EventLogData(EventTypeEnum.Information, "API Example", "APIEXAMPLE") { SiteID = SiteContext.CurrentSiteID, EventTime = DateTime.Now, EventDescription = "Logging a sample event to the event log." }; // Logs the event into the event log eventLog.LogEvent(eventData); ``` [> Back to list of examples](#toc) ### Working with events (sending events by email) ```csharp // Gets all error events logged in the past day var errors = EventLogInfo.Provider.Get() .WhereEquals("EventType", EventType.ERROR) .WhereGreaterThan("EventTime", DateTime.Now.Subtract(TimeSpan.FromDays(1))); if (errors.Count > 0) { // Creates the email message EmailMessage msg = new EmailMessage() { From = "system@localhost.local", Recipients = "admin@localhost.local", Subject = "Xperience Errors (" + errors.Count + ")", Body = "

{0} - {1} - {2}

"; // Sends out the email message EmailSender.SendEmail(msg); } ``` [> Back to list of examples](#toc) ### Clearing the event log ```csharp // Clears the event log for the current site EventLogHelper.ClearEventLog(MembershipContext.AuthenticatedUser.UserID, MembershipContext.AuthenticatedUser.UserName, RequestContext.UserHostAddress, SiteContext.CurrentSiteID); ``` [> Back to list of examples](#toc)