System.Windows.Forms.HexBox.InternalSelect C# (CSharp) Method

        void InternalSelect(long start, long length)
        {
            long pos = start;
            long sel = length;
            int cp = 0;

            if(sel > 0 && _caretVisible)
                DestroyCaret();
            else if(sel == 0 && !_caretVisible)
                CreateCaret();

            SetPosition(pos, cp);
            SetSelectionLength(sel);

            UpdateCaret();
            Invalidate();
        }