public static void WriteEvent(string sourceName, string eventMessage, int eventType, int eventID)
{
if (!System.Diagnostics.EventLog.SourceExists(sourceName))
{
EventSourceCreationData SourceData = new EventSourceCreationData("", "");
SourceData.LogName = _logName;
SourceData.MachineName = ".";
SourceData.Source = sourceName;
System.Diagnostics.EventLog.CreateEventSource(SourceData);
EventLogPermission eventLogPerm = new EventLogPermission(EventLogPermissionAccess.Administer, ".");
eventLogPerm.PermitOnly();
}
System.Diagnostics.EventLogEntryType type = (System.Diagnostics.EventLogEntryType)eventType;
while (true)
{
int logMaxLength = 31000; // Log entry string written to the event log cannot exceed 32766 characters
if (eventMessage.Length <= logMaxLength)
{
EventLog.WriteEntry(sourceName, eventMessage, type, eventID);
break;
}
else
{
EventLog.WriteEntry(sourceName, eventMessage.Substring(0, logMaxLength), type, eventID);
eventMessage = eventMessage.Substring(logMaxLength, eventMessage.Length - logMaxLength);
}
}
}
public static void WriteEvent(string message, EventLogEntryType eventLogEntryType = EventLogEntryType.Error, int id = 2030)
{
string eventViewerLogSource = Durados.Database.LongProductName;
string eventViewerLog = "Application";
if (!(EventLog.SourceExists(eventViewerLogSource, ".")))
{
EventSourceCreationData eventSourceCreationData = new EventSourceCreationData(eventViewerLogSource, eventViewerLog);
EventLog.CreateEventSource(eventSourceCreationData);
}
EventLogPermission eventLogPerm = new EventLogPermission(EventLogPermissionAccess.Administer, ".");
eventLogPerm.PermitOnly();
EventLog evLog = new EventLog();
evLog.Source = eventViewerLogSource;
evLog.WriteEntry(message, eventLogEntryType, id);
evLog.Close();
}
protected override void Append(LoggingEvent loggingEvent)
{
//
// Write the resulting string to the event log system
//
int eventID = 0;
// Look for the EventLogEventID property
object eventIDPropertyObj = loggingEvent.LookupProperty("EventID");
if (eventIDPropertyObj != null)
{
if (eventIDPropertyObj is int)
{
eventID = (int)eventIDPropertyObj;
}
else
{
string eventIDPropertyString = eventIDPropertyObj as string;
if (eventIDPropertyString != null && eventIDPropertyString.Length > 0)
{
// Read the string property into a number
int intVal;
if (SystemInfo.TryParse(eventIDPropertyString, out intVal))
{
eventID = intVal;
}
else
{
ErrorHandler.Error("Unable to parse event ID property [" + eventIDPropertyString + "].");
}
}
}
}
// Write to the event log
try
{
string eventTxt = RenderLoggingEvent(loggingEvent);
// There is a limit of 32K characters for an event log message
if (eventTxt.Length > 32000)
{
eventTxt = eventTxt.Substring(0, 32000);
}
EventLogEntryType entryType = GetEntryType(loggingEvent.Level);
using (SecurityContext.Impersonate(this))
{
EventLogPermission eventLogPermission = new EventLogPermission(EventLogPermissionAccess.Administer, ".");
eventLogPermission.PermitOnly();
EventLog.WriteEntry(ApplicationName, eventTxt, entryType, eventID);
}
}
catch (Exception ex)
{
ErrorHandler.Error("Unable to write to event log [" + LogName + "] using source [" + ApplicationName + "]", ex);
}
}
