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//
// System.Diagnostics.EventLogTraceListener.cs
//
// Authors:
// Jonathan Pryor (jonpryor@vt.edu)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) 2002 Jonathan Pryor
// (C) 2003 Andreas Nahr
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.Runtime.InteropServices;
using System.Security.Permissions;
namespace System.Diagnostics
{
[PermissionSet (SecurityAction.LinkDemand, Unrestricted = true)]
public sealed class EventLogTraceListener : TraceListener
{
private EventLog event_log;
private string name;
public EventLogTraceListener ()
{
}
public EventLogTraceListener (EventLog eventLog)
{
if (eventLog == null)
throw new ArgumentNullException ("eventLog");
this.event_log = eventLog;
}
public EventLogTraceListener (string source)
{
if (source == null)
throw new ArgumentNullException ("source");
event_log = new EventLog ();
event_log.Source = source;
}
public EventLog EventLog {
get { return event_log; }
set { event_log = value; }
}
public override string Name {
get { return name != null ? name : event_log.Source; }
set { name = value; }
}
public override void Close ()
{
event_log.Close ();
}
protected override void Dispose (bool disposing)
{
if (disposing)
event_log.Dispose ();
}
public override void Write (string message)
{
#if NET_2_0
TraceData (new TraceEventCache (), event_log.Source,
TraceEventType.Information, 0, message);
#else
event_log.WriteEntry (message);
#endif
}
public override void WriteLine (string message)
{
Write (message);
}
#if NET_2_0
[ComVisible (false)]
public override void TraceData (TraceEventCache eventCache,
string source, TraceEventType eventType,
int id, object data)
{
EventLogEntryType type;
switch (eventType) {
case TraceEventType.Critical:
case TraceEventType.Error:
type = EventLogEntryType.Error;
break;
case TraceEventType.Warning:
type = EventLogEntryType.Warning;
break;
default:
type = EventLogEntryType.Information;
break;
}
event_log.WriteEntry (data != null ? data.ToString () : String.Empty, type, id, 0);
}
[ComVisible (false)]
public override void TraceData (TraceEventCache eventCache,
string source, TraceEventType eventType,
int id, params object [] data)
{
string s = String.Empty;
if (data != null) {
string [] arr = new string [data.Length];
for (int i = 0; i < data.Length; i++)
arr [i] = data [i] != null ? data [i].ToString () : String.Empty;
s = String.Join (", ", arr);
}
TraceData (eventCache, source, eventType, id, s);
}
[ComVisible (false)]
public override void TraceEvent (TraceEventCache eventCache,
string source, TraceEventType eventType,
int id, string message)
{
TraceData (eventCache, source, eventType, id, message);
}
[ComVisible (false)]
public override void TraceEvent (TraceEventCache eventCache,
string source, TraceEventType eventType,
int id, string format, params object [] args)
{
TraceEvent (eventCache, source, eventType, id, format != null ? String.Format (format, args) : null);
}
#endif
}
}
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