public FRM_ORRDER_TOTAL() { InitializeComponent(); if (raOR.Checked == true) { dataGridView1.DataSource = order.ORDER_TOTAL(); CalculateTotalAmount1(); this.cmb.DataSource = order.GET_CUSTOMER_ID(); cmb.DisplayMember = "MAGACA"; cmb.ValueMember = "ID"; } else if (raPOR.Checked == true) { dataGridView1.DataSource = order.PURCHASE_TOTAL(); CalculateTotalAmount1(); this.cmb.DataSource = order.GET_SUPPLIER_ID(); cmb.DisplayMember = "MAGACA"; cmb.ValueMember = "ID"; } }