Linq how to move all values of two columns to another table

Question

I want to move 2 columns of my table to an another table. I can select values that i want to move but i'am unable to move them. How can i make this ? Here is my implementation

var cartQuery = (from c in db.CartTbls.AsQueryable()
                                 join cs in db.CartShoeTbls on c.CartID equals cs.CartID
                                 where c.CustomerID == cusID
                                 select new {c.CustomerID,c.TotalPrice,cs.ShoeID,cs.Quantity});

What i want to do is copy the all values of ShoeID and Quantity attiributes. Any help would be appriciated.

Answer 1

Use should add the selection to the table and save the changes:

foreach (var item in cartQuery)
    db.OrderShoeTbl.Add(new OrderShoe()
        { ShoeID = item.ShoeID, Quantity = item.Quantity });

db.SaveChanges();

if you are using Linq to SQL, the insert is different and should look like this:

foreach (var item in cartQuery)
    db.OrderShoeTbl.InsertOnSubmit(new OrderShoe()
        { ShoeID = item.ShoeID, Quantity = item.Quantity });

db.SubmitChanges();

Answer 2

Stefan's answer is OK however you may insert everything in one step:

var cartQuery = (from c in db.CartTbls.AsQueryable()
        join cs in db.CartShoeTbls on c.CartID equals cs.CartID
        where c.CustomerID == cusID
        select new OrderShoeTbl{ShoeID = c.ShoeID, Quantity = c.Quantity});

    db.OrderShoeTbl.InsertAllOnSubmit(cartQuery);

    db.SubmitChanges();

EDIT

If you want to delete data from source table I would also wrap everything in single transaction to avoid inconsistency in case of errors.