private void beforeInsert(object sender, BeforeModificationEventArgs e)
{
if (CanUndoRedo)
{
UndoRedoStruct ne = new UndoRedoStruct(e, UndoRedoAction.Insert);
undoRedoList.Add(ne);
}
int lineIndex = LineFromPosition(e.Position);
Line Curl = Lines[lineIndex];
int linePos = Curl.Position;
code.ClearFlags();
code.AddLinesAt(lineIndex, linePos, e.Position, e.Text);
}