public void Open(IMessagesRangeHost host)
{
if (host == null)
{
throw new ArgumentNullException("host");
}
CheckNotOpen();
this.host = host;
}
public void Dispose()
{
if (host == null)
{
return;
}
IMessagesRangeHost tmp = host;
// Zero this.host to indicate that this range is closed (disposed).
host = null;
// Notify the host, that this range is asked to be disposed.
// We have to do that after this range is marked as closed because
// the host may want to merge this range with others, that need
// this range to be closed.
tmp.DisposeRange(this);
}
