linq query that joins results from three other queries - linq

Question

I am trying to join results from three linq queries. The types are as follows:
orderItems is a List<OrderLineItem>
transitTimes is a Dictionary<int,int> where Key = SiteId and Value = TransitDays
shippingPriority is a Dictionary<int,int> where Key = DefaultPriority and Value = SiteId
public class OrderLineItem
{
public decimal OrderLineWorkId { get; set; }
public string Sku { get; set; }
public string SiteId { get; set; }
public char FlagSlapType { get; set; }
public char FlagTruck { get; set; }
public string SkuType { get; set; }
public int QtyOrdered { get; set; }
public int QtySellable { get; set; }
}
public class OrderAllocation
{
public int SiteId { get; set; }
public int TransitDays { get; set; }
public int QtyItemsInStock { get; set; }
public int QtyParcelInStock { get; set; }
public int DefaultPriority { get; set; }
}
Here is my linq query, but it always returns 0 results. Not sure where I am going wrong?
var results = (from i in orderItems
join t in transitTimes on i.SiteId equals t.Key.ToString()
join d in shippingPriority on t.Key equals d.Value
group i by i.SiteId into g
select new OrderAllocation()
{
SiteId = Convert.ToInt32(g.Key),
TransitDays = transitTimes.Select(x => x.Value).FirstOrDefault(),
QtyItemsInStock = g.Count(e => e.QtySellable >= e.QtyOrdered),
QtyParcelInStock = g.Count(e => e.QtySellable >= e.QtyOrdered && e.FlagSlapType != 'Y'),
DefaultPriority = defaultShippingPriority.Select(x => x.Key).FirstOrDefault()
}).OrderBy(x => x.SiteId).ToList();
UPDATE
I found what was wrong, the SiteId of type string had a values with a prefix 0 (ie 01, 02, etc) and therefore would not join with values like 1, 2, etc. Changed type from string to int and am now getting results. Sorry for the false alarm.

Answer 1

The issue may be related to differences in the data types:
(from i in orderItems
join t in transitTimes on i.SiteId equals t.Key.ToString()
orderItems defines SiteId as an string
public string SiteId { get; set; }
while transitTimes has a key of int
Dictionary<int,int>
The join condition of int to string may not provide the results you are expecting.