public void HandleOnLogEvent(Object sender, LogEventArgs args)
{
if (m_writer == null) return;
String logText = args.Timestamp.ToString("") + " | " + args.Severity + " | " +
args.Caller + "::line " + args.Line + " | " + args.Message +
Environment.NewLine;
m_writer.Write(logText);
// Bad for perfomance but necessary in case of a crash.
m_writer.Flush();
}
public void HandleOnLogEvent(object _sender, LogEventArgs args)
{
if (InvokeRequired)
{
BeginInvoke(new EventHandler<LogEventArgs>(HandleOnLogEvent), new object[] { _sender, args });
return;
}
// We might be called after the UI has been disposed. Let the
// event go.
if (this.IsDisposed || this.Disposing) return;
// Determine whether we want to scroll.
bool scrollFlag = (this.WindowState != FormWindowState.Minimized &&
lvMessages.Items.Count != 0 &&
lvMessages.ClientRectangle.Contains(
lvMessages.Items[lvMessages.Items.Count - 1].SubItems[1].Bounds));
// Add the event.
AddEvent(args, scrollFlag);
}
/// <summary>
/// Handle a request to log an event. This method is private to
/// standardize the layout of the stack frames.
/// </summary>
private static void privLog(int severity, String msg, bool isLoggingException)
{
// Return early if we are not logging.
if (m_loggingLevel == LoggingLevel.None) return;
// Generate the log event.
String callerStr = "Unknown";
String lineStr = "?";
String callStackStr = "";
if (m_loggingLevel == LoggingLevel.Debug)
{
FormatStackFrame(new StackFrame(2, true), out callerStr, out lineStr);
StackTrace st = new StackTrace(true);
for (int i = 2; i < st.FrameCount; i++)
{
String name, line;
FormatStackFrame(st.GetFrame(i), out name, out line);
callStackStr += name + " at line " + line + Environment.NewLine;
}
}
LogEventArgs evt = new LogEventArgs(severity, callerStr, callStackStr, lineStr, msg,
DateTime.Now.ToLocalTime());
// For ordering and consistency purpose the following has to be
// done in mutual exclusion.
lock (Mutex)
{
// Overflow, remove some events.
if (m_evtList.Count >= m_maxNbEvt) m_evtList.RemoveRange(0, m_evtList.Count / 2);
// Add the event to the list.
m_evtList.Add(evt);
#if DEBUG
Debug.WriteLine(evt.Timestamp.ToString("") + " | " + evt.Severity + " | " +
evt.Caller + "::line " + evt.Line + " | " + evt.Message);
#endif
// Dispatch the event to the listeners.
if (m_onLogEvent != null && !m_firingFlag)
{
try
{
m_firingFlag = true;
m_onLogEvent(null, evt);
m_firingFlag = false;
}
catch (Exception ex)
{
Base.HandleError(ex.Message, true);
}
}
}
}
/// <summary>
/// Adds a message to the listview. If scrollToBotton
/// is set to true, calls EnsureVisible so that the last
/// item is scrolled to.
/// </summary>
private void AddEvent(LogEventArgs evt, bool scrollToBottom)
{
// Add this message to listview
ListViewItem itm = new ListViewItem(evt.Severity.ToString());
itm.Name = lvMessages.Columns[0].Name;
itm.Tag = evt.CallStack;
switch (evt.Severity)
{
case 1:
itm.BackColor = Color.Yellow;
break;
case 2:
itm.BackColor = Color.Red;
break;
default:
itm.BackColor = Color.White;
break;
}
ListViewItem.ListViewSubItem sub;
sub = new ListViewItem.ListViewSubItem();
sub.Name = lvMessages.Columns[1].Name;
sub.Text = evt.Timestamp.ToString("hh:mm:ss.fff");
itm.SubItems.Add(sub);
sub = new ListViewItem.ListViewSubItem();
sub.Name = lvMessages.Columns[2].Name;
sub.Text = evt.Caller;
itm.SubItems.Add(sub);
sub = new ListViewItem.ListViewSubItem();
sub.Name = lvMessages.Columns[3].Name;
sub.Text = evt.Line;
itm.SubItems.Add(sub);
sub = new ListViewItem.ListViewSubItem();
sub.Name = lvMessages.Columns[4].Name;
sub.Text = evt.Message;
itm.SubItems.Add(sub);
lvMessages.Items.Add(itm);
if (scrollToBottom) CorrectUI(false);
}