private void btnMuteUnmute_Click(object sender, System.EventArgs e)
{
if (lvInConferenceWith.SelectedItems.Count > 0)
{
ListViewItem lvit = lvInConferenceWith.SelectedItems[0];
if (Convert.ToInt32(lvit.Tag) == 0)
{
ics.MuteContactInConference(lvit.Text, true);
lvit.Tag = 1;
}
else
{
ics.MuteContactInConference(lvit.Text, false);
lvit.Tag = 0;
lvInConferenceWith.Invalidate();
lvInConferenceWith.Refresh();
}
}
}