private void ctacte_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.F1)
            {
                AyudaCliente("");

                // Despues de Que Vuelva del F1

                ValidaCliente();

                sys_localBL BL = new sys_localBL();
                tb_sys_local BE = new tb_sys_local();

                DataTable dt = new DataTable();

                BE.ctacte = ctacte.Text.ToString();
                dt = BL.GenCodigo(EmpresaID, BE).Tables[0];
                item.Text = dt.Rows[0]["item"].ToString().PadLeft(3, '0');
                direcnume.Focus();
            }

            if (e.KeyCode == Keys.Enter)
            {
                // Primero Validar
                ValidaCliente();

                sys_localBL BL = new sys_localBL();
                tb_sys_local BE = new tb_sys_local();

                DataTable dt = new DataTable();

                BE.ctacte = ctacte.Text.ToString();
                dt = BL.GenCodigo(EmpresaID, BE).Tables[0];
                item.Text = dt.Rows[0]["item"].ToString().PadLeft(3, '0');
                direcnume.Focus();
            }
        }
        private void btn_agregar_Click(object sender, EventArgs e)
        {
            direcnume.Text = "";
            localname.Text = "";
            direcnume.Enabled = true;
            canalventaid.Enabled = true;
            btn_cancelar.Enabled = true;
            btn_nuevo.Enabled = false;
            btn_editar.Enabled = false;
            sys_localBL BL = new sys_localBL();
            tb_sys_local BE = new tb_sys_local();

            DataTable dt = new DataTable();

            if (ctacte.Text == "")
            {
                MessageBox.Show("No Existe la Cuenta Corriente Para Generar el Item !!!");
                return;
            }

            BE.ctacte = ctacte.Text.ToString();
            dt = BL.GenCodigo(EmpresaID, BE).Tables[0];
            item.Text = dt.Rows[0]["item"].ToString().PadLeft(3, '0');
            ssModo = "NEW";
            btn_grabar.Enabled = true;
            estabsunat.Enabled = true;
            telf.Enabled = true;
            rpc.Enabled = true;
            email.Enabled = true;
            direcnume.Focus();
        }