public View_Sales_Order() { InitializeComponent(); CustomersData.DataSource = GeneralMethods.GetCustomers(); cmbCustomers.DataSource = CustomersData; cmbCustomers.DisplayMember = "cname"; cmbCustomers.ValueMember = "cid"; cmbCustomers.SelectedIndex = -1; SalesOrdersData.DataSource = GeneralMethods.GetSalesOrders(); lstSalesOrder.DataSource = SalesOrdersData; lstSalesOrder.DisplayMember = "date"; lstSalesOrder.ValueMember = "soid"; }