// get current right bottom corner position(X, Y), support 4 mode: taskbar bottom/right/up/left
    public System.Drawing.Point getCornerLocation(Size windowSize)
    {
        int xPos = 0, yPos = 0;

        if ((Screen.PrimaryScreen.Bounds.Width == Screen.PrimaryScreen.WorkingArea.Width) &&
            (Screen.PrimaryScreen.WorkingArea.Y == 0))
        {
            //taskbar bottom
            xPos = Screen.PrimaryScreen.WorkingArea.Width - windowSize.Width;
            yPos = Screen.PrimaryScreen.WorkingArea.Height - windowSize.Height;
        }
        else if ((Screen.PrimaryScreen.Bounds.Height == Screen.PrimaryScreen.WorkingArea.Height) &&
                (Screen.PrimaryScreen.WorkingArea.X == 0))
        {
            //taskbar right
            xPos = Screen.PrimaryScreen.WorkingArea.Width - windowSize.Width;
            yPos = Screen.PrimaryScreen.WorkingArea.Height - windowSize.Height;
        }
        else if ((Screen.PrimaryScreen.Bounds.Width == Screen.PrimaryScreen.WorkingArea.Width) &&
                (Screen.PrimaryScreen.WorkingArea.Y > 0))
        {
            //taskbar up
            xPos = Screen.PrimaryScreen.WorkingArea.Width - windowSize.Width;
            yPos = Screen.PrimaryScreen.WorkingArea.Y;
        }
        else if ((Screen.PrimaryScreen.Bounds.Height == Screen.PrimaryScreen.WorkingArea.Height) &&
                (Screen.PrimaryScreen.WorkingArea.X > 0))
        {
            //taskbar left
            xPos = Screen.PrimaryScreen.WorkingArea.X;
            yPos = Screen.PrimaryScreen.WorkingArea.Height - windowSize.Height;
        }

        return new System.Drawing.Point(xPos, yPos);
    }

    

    this.Location = crl.getCornerLocation(this.Size);