FastColoredTextBoxNS.InsertTextCommand.Undo C# (CSharp) Method

        public override void Undo()
        {
            ts.CurrentTB.Selection.Start = sel.Start;
            ts.CurrentTB.Selection.End = lastSel.Start;
            ts.OnTextChanging();
            ClearSelectedCommand.ClearSelected(ts);
            base.Undo();
        }