ArgumentOutOfRa ngeException in ListView.Items. Add

[Droopy]

Hi,

I got the System.Argument OutOfRangeExcep tion exception when adding an
item in ListView.
This ListView (listViewOutput ) is used to display messages to user
(normal messages and error messages):

private void AddOutputMessag e (string message)
{
listViewOutput. BeginUpdate ();
if (listViewOutput .Items.Count > MaxOutputLines)
listViewOutput. Items.RemoveAt (0);
ListViewItem lvi =
new ListViewItem (DateTime.Now.T oString ("HH:mm:ss.ff") );
lvi.SubItems.Ad d (message);
listViewOutput. Items.Add (lvi);
lvi.EnsureVisib le ();
listViewOutput. EndUpdate ();
}

private void AddOutputError (string message)
{
listViewOutput. BeginUpdate ();
if (listViewOutput .Items.Count > MaxOutputLines)
listViewOutput. Items.RemoveAt (0);
ListViewItem lvi =
new ListViewItem (DateTime.Now.T oString ("HH:mm:ss.ff") );
ListViewItem.Li stViewSubItem lviMessage =
lvi.SubItems.Ad d (message);
lvi.UseItemStyl eForSubItems = false;
lviMessage.Back Color = Color.Red;
// the exception is throwed by following line
listViewOutput. Items.Add (lvi);
lvi.EnsureVisib le ();
listViewOutput. EndUpdate ();
}

Do I need some locking as these 2 functions uses the same ListView ?
Besides, the AddOutputError can be called from other functions located
in the main Form (and so, in the GUI thread) or in other threads.
In the latter case, to ensure that the GUI thread is used, a message is
inserted in a queue.
This queue is read in a dedicated thread as following :

...
switch (guiInfo.EventT ype)
{
case GuiEventType.Me ssage:
case GuiEventType.Er ror:
if (listViewOutput .InvokeRequired )
BeginInvoke
(new HandleGuiEventD elegate
(UpdateMiscelan eous),
new object[] { guiInfo });
else
UpdateMiscelane ous (guiInfo);
break;
...
}
...

public void UpdateMiscelane ous (GuiEventArgs guiInfo)
{
switch (guiInfo.EventT ype)
{
case GuiEventType.Me ssage:
GuiDataMessage guiData =
(GuiDataMessage ) guiInfo.Data;
AddOutputMessag e (guiData.Messag e);
break;

case GuiEventType.Er ror:
guiData = (GuiDataMessage ) guiInfo.Data;
AddOutputError (guiData.Messag e);
break;

default:
if (_logger.IsErro rEnabled)
_logger.Error
("UpdateMiscela neous: unknown event
type " +
guiInfo.EventTy pe.ToString ());
break;
}
}

Thanks a lot in advance for your help.