LINQ - Getting error name is not in scope onn the left side of equals.

Asked By anamika shah
13-Aug-10 12:43 PM

I am tryihg to joi nmore than one field in linq

listModel.AddRange((from veh in dataContext.vwVehicle

join model in dataContext.Models on new { model.ModelName, model.LanguageCulture } equals new { veh.Model, languageculture }

where (string.IsNullOrEmpty(year) || year.IndexOf(veh.Year) >= 0) && (string.IsNullOrEmpty(make) || make.IndexOf(veh.Make) >= 0)

&& countryCode == veh.countrycode

orderby veh.Model

select new IdNamePair() { Id = veh.Model, Name = model.ModelLocalized }).Distinct().ToList());

I am getting error name model is ot in scope on the left side of equals.Consider swapping the expression on the either side of equals.

  Mash B replied to anamika shah
18-Aug-10 02:15 AM
Note that order matters,You must place the class or table to be joined on the left side of the equals operator, and the joining class or table on the right side. In this case vwVehicle is the class to be joined, and Models is the joining class. The development team did some work to ensure that the compiler catches errors with order.
 
Below is your changed query:
 
listModel.AddRange((from veh in dataContext.vwVehicle
 
join model in dataContext.Models on new new { veh.Model, languageculture } equals { model.ModelName, model.LanguageCulture }
 
where (string.IsNullOrEmpty(year) || year.IndexOf(veh.Year) >= 0) && (string.IsNullOrEmpty(make) || make.IndexOf(veh.Make) >= 0)
 
&& countryCode == veh.countrycode
 
orderby veh.Model
 
select new IdNamePair() { Id = veh.Model, Name = model.ModelLocalized }).Distinct().ToList());
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