Aerolinea.seleccionReservacion.btnB9_Click C# (CSharp) Method

private btnB9_Click ( object sender, EventArgs e ) : void
sender	object
e	System.EventArgs
return	void

        private void btnB9_Click(object sender, EventArgs e)
        {
            btnB9.BackColor = Color.Red;
        }

seleccionReservacion