how to select all controls on panel on rubber band selection

[tinku3366]

I want to select all controls on form by rubber band selection .Here controls is not selecting.

please help me. thanxs

public void MyMouseMove(Object sender, MouseEventArgs e)
        {
            Point ptCurrent = new Point(e.X, e.Y);
            // If we "have the mouse", then we draw our lines.
            if (bHaveMouse)
            {
                // If we have drawn previously, draw again in
                // that spot to remove the lines.
                if (ptLast.X != -1)
                {
                    MyDrawReversibleRectangle(ptOriginal, ptLast);
                }
                // Update last point.
                ptLast = ptCurrent;
                // Draw new lines.
                MyDrawReversibleRectangle(ptOriginal, ptCurrent);
            }
        }

        public void MyMouseUp(Object sender, MouseEventArgs e)
        {
            // Set internal flag to know we no longer "have the mouse".
            bHaveMouse = false;
            // If we have drawn previously, draw again in that spot
            // to remove the lines.
            if (ptLast.X != -1)
            {
                Point ptCurrent = new Point(e.X, e.Y);
                MyDrawReversibleRectangle(ptOriginal, ptLast);
            }
            // Set flags to know that there is no "previous" line to reverse.
            ptLast.X = -1;
            ptLast.Y = -1;
            ptOriginal.X = -1;
            ptOriginal.Y = -1;
        }
        private void MyDrawReversibleRectangle(Point p1, Point p2)
        {
            Rectangle rc = new Rectangle();

            // Convert the points to screen coordinates.
            p1 = PointToScreen(p1);
            p2 = PointToScreen(p2);
            // Normalize the rectangle.
            if (p1.X < p2.X)
            {
                rc.X = p1.X;
                rc.Width = p2.X - p1.X;
            }
            else
            {
                rc.X = p2.X;
                rc.Width = p1.X - p2.X;
            }
            if (p1.Y < p2.Y)
            {
                rc.Y = p1.Y;
                rc.Height = p2.Y - p1.Y;
            }
            else
            {
                rc.Y = p2.Y;
                rc.Height = p1.Y - p2.Y;
            }
            // Draw the reversible frame.
            ControlPaint.DrawReversibleFrame(rc,
                            Color.Red, FrameStyle.Dashed);
        }
        public void MyMouseDown(Object sender, MouseEventArgs e)
        {
            // Make a note that we "have the mouse".
            bHaveMouse = true;
            // Store the "starting point" for this rubber-band rectangle.
            ptOriginal.X = e.X;
            ptOriginal.Y = e.Y;
            // Special value lets us know that no previous
            // rectangle needs to be erased.
            ptLast.X = -1;
            ptLast.Y = -1;
        }