Eventlog.EntryWritten Invoked in WinForm

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2.00/5 (1 vote)

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Hello

When i execute the code i get a parameter mismatch exception.
How do i do it correctly? Is a C# Windows Form

C#

private void events_EntryWritten(object sender, EntryWrittenEventArgs e)
{
  if(InvokeRequired)
  {
    Invoke(new EntryWrittenEventHandler(events_EntryWritten));
  }
  else
  {                
    foreach (EventLogEntry entry in events.Entries)
    {
      lvEventlog.Items.Add(entry.TimeWritten.ToString());
      lvEventlog.Items[lvEventlog.Items.Count].SubItems.Add(entry.Message);
    }
  }
}

Posted 12-Aug-15 9:44am

JacobSV

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Comments

Sergey Alexandrovich Kryukov 12-Aug-15 15:56pm

In what line?
Why would you use this.events? Your event arguments have just one property, EventLogEntry Entry, you are not even using it.
One entry is added, but you add all existing entries in a list, why?
—SA

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Wendelius · Answer 1 · 2015-08-12T09:59:00

The events_EntryWritten method expects two parameters (sender and e) when you call it using the Invoke method. However, you're not passing them with the call so instead of

C#

...
if(InvokeRequired)
{
  Invoke(new EntryWrittenEventHandler(events_EntryWritten));
}
...

try

C#

...
if (InvokeRequired) {
   Invoke(new System.Diagnostics.EntryWrittenEventHandler(events_EntryWritten), new object[] {sender, e});
} 
...

Also you probably mean to add the new entry to your list view so perhaps the remaining code should be something like

C#

...
} else {
      lvEventlog.Items.Add(e.Entry.TimeWritten.ToString());
      lvEventlog.Items[lvEventlog.Items.Count - 1].SubItems.Add(e.Entry.Message);
}