在C＃datagridview中处理行和列

Question

I'm dealing with some dataGridView forms but I have some problems that I don't understand well

So, this is what I'm missing.

How to show data in those columns - Customers, Employees and Shippers?

It's Northwind DB and simple form with classic datagridview.

Function returns list of all orders from DB. I know how to remove columns but in this case I need to show ALL data from that.

Do I need to play with my query or with form C# code?

Sorry, here's the code:

Query

public static List<Orders> getAllOrd()
{
  var query = (from o in Model.DM_Class.dc.Orders
               select o).ToList();
  return query;
}

Form

private void frm_Orders_Load(object sender, EventArgs e)
        {
            dgv_Orders.DataSource = OrdersService.getAllOrd();
        }

How to manage the ones in that columns to show them also?

Answer 1

My query was like this:

public static List<Orders> getAllOrd()
{
    var query = (from o in Model.DM_Class.dc.Orders
                 select o).ToList();
    return query;
}

and I didn't get any data in Customers, Employee and Shippers columns.

I re-wrote query like this:

public static List<Orders> getAllOrd()
{
    var query = (from o in Model.DM_Class.dc.Orders
                 join e in Model.DM_Class.dc.Employee on o.employeeID equals e.employeeID
                 select new {
                     // name all desired columns here and separate with comma 
                  }).ToList();
    return query;
}

After that I got data in all columns.