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Help with LINQ left join

Posted By:      Posted Date: October 22, 2010    Points: 0   Category :ASP.Net
 

Hi,

Im having a little trouble getting the syntax right in the following LINQ query.

            var merchants =
from m in dtM.AsEnumerable()
join mp in dtMP.AsEnumerable()
on m.Field<int>("MerchantId") equals mp.Field<int>("MerchantId")
into tmpProfile
from t in tmpProfile.DefaultIfEmpty()
where m.Field<string>("Name").ToLower().Contains(searchText.ToLower()) ||
t.Field<string>("Profile").ToLower().Contains(searchText.ToLower())
select m.Field<int>("MerchantId");

The problem is the highlighted line where I'm attempting to make a decision on a field that is potentially null/empty.  Anyone know how I get round this?


Thanks




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