fyiReporting.RdlDesign.RdlDesigner.menuEditUndo_Click C# (CSharp) Method

        private void menuEditUndo_Click(object sender, System.EventArgs ea)
        {
            if (this.ctlEditTextbox != null && ctlEditTextbox.Focused)
            {
                ctlEditTextbox.Undo();
                return;
            }

            RdlEditPreview e = GetEditor();
            if (e == null)
                return;

            if (e.CanUndo == true)
            {
                e.Undo();

                MDIChild mc = this.ActiveMdiChild as MDIChild;
                if (mc != null && mc.DesignTab == DesignTabs.Design)
                {
                    e.DesignCtl.SetScrollControls();
                }
                this.SelectionChanged(this, new EventArgs());
            }
        }