Aerolinea.seleccionReservacion.btnA9_Click C# (CSharp) Method

private btnA9_Click ( object sender, EventArgs e ) : void
sender	object
e	System.EventArgs
return	void

        private void btnA9_Click(object sender, EventArgs e)
        {
            btnA9.BackColor = Color.Red;
        }

seleccionReservacion