Filling a DataSet or DataTable from a LINQ query result set

Question

How do you expose a LINQ query as an ASMX web service? Usually, from the business tier, I can return a typed DataSet or DataTable which can be seri

Answer 1

If you use IEnumerable as the return type, it will return your query variable directly.

MyDataContext db = new MyDataContext();
IEnumerable query = 
    (from order in db.Orders.AsEnumerable()
        select new
        {
            order.Property,
            order.Property2
        })
    as IEnumerable;
return query.CopyToDataTable();