protected void LoadCustomers()
{
//using (SqlConnection conn = new SqlConnection(ConnString))
//{
//SqlCommand cmd = new SqlCommand("SELECT companyname,customerid FROM customers", conn);
//cmd.Connection.Open();
//SqlDataReader reader = cmd.ExecuteReader();
//CustomerList.DataSource = reader;
//CustomerList.DisplayMember = "CompanyName"; //Does not work!
//CustomerList.ValueMember = "CustomerId"; //Does not work!
// cmd.Connection.Close();
//}
// CustomerList.DataSource = reader;
// the DataReader is connected only, read only & forward only data.
// Well, if you were wondering if it could be bound to in WindowsForms,
// you thought right. It definitely CAN NOT be bound to, because again,
// in WindowsForms, you're binding to the actual objects and if you close
// a DataReader, then all the data is no longer there. The other big reason
// you wouldn't be able to bind to a DataReader is that only instances that
// Implement IList can be bound to in WindowsForms.
// Add a binding source to be able to use the northwind and poulate the DataSet
BindingSource bsCustomers;
bsCustomers = new BindingSource();
CustomersManager objCustomersManager = new CustomersManager();
bsCustomers.DataSource = objCustomersManager.GetListofCustomers();
CustomerList.DataSource = bsCustomers;
CustomerList.DisplayMember = "CompanyName";
CustomerList.ValueMember = "CustomerId";
}