SourceGrid.GridVirtual.ChangeMouseSelectionCorner C# (CSharp) Method

        public virtual void ChangeMouseSelectionCorner(Position p_Corner)
        {
            Range newMouseSelection = new Range(Selection.ActivePosition, p_Corner);

            bool l_bChange = false;
            if (m_MouseSelectionRange != newMouseSelection)
            {
                m_MouseSelectionRange = newMouseSelection;
                l_bChange = true;
            }

            if (l_bChange)
                OnMouseSelectionChange(EventArgs.Empty);
        }