private void Show_Combobox(int iRowIndex, int iColumnIndex)
        {
            // DESCRIPTION: SHOW THE COMBO BOX IN THE SELECTED CELL OF THE GRID.
            // PARAMETERS: iRowIndex - THE ROW ID OF THE GRID.
            //             iColumnIndex - THE COLUMN ID OF THE GRID.

            int x      = 0;
            int y      = 0;
            int Width  = 0;
            int height = 0;

            // GET THE ACTIVE CELL'S DIMENTIONS TO BIND THE COMBOBOX WITH IT.
            Rectangle rect = default(Rectangle);

            rect = grid_Master.GetCellDisplayRectangle(iColumnIndex, iRowIndex, false);
            x    = rect.X + grid_Master.Left;
            y    = rect.Y + grid_Master.Top;

            Width  = rect.Width;
            height = rect.Height;

            ComboBox1.SetBounds(x, y, Width, height);
            ComboBox1.Visible = true;
            ComboBox1.Focus();
        }