Server side Relation

class OrdersViewModel : ViewModelHelper
{
    public readonly Northwind.Models.Orders Orders = new Northwind.Models.Orders();
    public readonly Northwind.Models.Shippers Shippers = new Northwind.Models.Shippers();

    public OrdersViewModel()
    {
        From = Orders;

        Relations.Add(Shippers, Shippers.ShipperID.IsEqualTo(Orders.ShipVia));

        AllowUpdate = true;
        Where.Add(Orders.OrderDate.IsGreaterOrEqualTo(1997, 1, 1));

        Shippers.CompanyName.Caption = "Shipper Name";
        MapColumn(Orders.OrderID,
            Orders.CustomerID,
            Orders.OrderDate,
            Orders.ShipVia,
            Shippers.CompanyName);
        MapExperssion("ServerSideDayOfWeek", () => u.NDOW(u.DOW(Orders.OrderDate)));
    }
} 

Controlling a column caption and name

AllowUpdate = true;
Where.Add(Orders.OrderDate.IsGreaterOrEqualTo(1997, 1, 1));

Shippers.CompanyName.Caption = "Shipper Name";
MapColumn(Orders.OrderID,
    Orders.CustomerID, 

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