public View_Receive_Order() { InitializeComponent(); UsersData.DataSource = GeneralMethods.GetUsers(); cmbUsers.DataSource = UsersData; cmbUsers.DisplayMember = "uname"; //cmbUsers.ValueMember = "uid"; cmbUsers.SelectedIndex = -1; ReceiveOrdersData.DataSource = GeneralMethods.GetReceiveOrders(); lstReceiveOrder.DisplayMember = "Date"; lstReceiveOrder.ValueMember = "ID"; lstReceiveOrder.DataSource = ReceiveOrdersData; }