Aerolinea.seleccionReservacion.btnB4_Click C# (CSharp) Method

private btnB4_Click ( object sender, EventArgs e ) : void
sender	object
e	System.EventArgs
return	void

        private void btnB4_Click(object sender, EventArgs e)
        {
            btnB4.BackColor = Color.Red;
        }

seleccionReservacion