var result = from u
in
db.Order
join n
in
db.Equipment on u.OrderId equals n.OrderId into temp
from m
in
temp.DefaultIfEmpty()
select
new
{
OrderID = u.OrderId,
Customername = u.Customername,
EId = m ==
null
?
""
: m.EId.ToString(),
Price = m ==
null
? 0 : m.Price
};