LINQ join multiple conditions - linq

Question

I have formed the following LINQ query, but it gives error
mcc_season is not an attribute in mcc_product
How do I form the query where I have 2 WHERE conditions and both from different entities in the join
var guestCardProduct =
(from c in CrmOrgServiceContext.mcc_productpriceSet
join d in CrmOrgServiceContext.mcc_productSet
on c.mcc_product.Id equals d.mcc_productId
where d.mcc_producttype.Value == (int)mcc_product.mcc_producttypeOptionSet.GuestCard
&& c.mcc_season.Id == seasonId
select new
{
d.mcc_productId,
c.mcc_price
}).FirstOrDefault();

Answer 1

You might be able to re-write it as follows:
var guestCardProduct =
(from c in CrmOrgServiceContext.mcc_productpriceSet
where c.mcc_season.Id == seasonId
join d in CrmOrgServiceContext.mcc_productSet
on c.mcc_product.Id equals d.mcc_productId
where d.mcc_producttype.Value == (int)c.mcc_product.mcc_producttypeOptionSet.GuestCard
select new
{
d.mcc_productId,
c.mcc_price
}).FirstOrDefault();
We're assuming here that there are 1 - 0..1 relationships between mcc_productpriceSet and both mcc_season and mcc_product and also a 1 - 0..1 relationship between mcc_product and mcc_producttypeOptionSet. If you have 1-n relationships between any of these, then you are going to have to work through those relationships rather than dotting into the single property because you will have collections of child objects rather than a single child object. You may find it helpful to break your query into smaller pieces to narrow down the source of the problem.