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AnswerRe: Basic Polymorphism Problem Pin
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QuestionC# linq group by Pin
rachel_m4-Oct-12 18:43
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AnswerRe: C# linq group by Pin
OriginalGriff5-Oct-12 0:19
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rachel_m5-Oct-12 3:48
Memberrachel_m5-Oct-12 3:48 
I am trying to write a linq to sql statement that is having a problem. The error message says the value is not an instance of an object.

The sql similar is the following:

select  COUNT (Trans_id),ip.TNum, from dbo.Trans  t inner join  dbo.IWbook iw on t.IWork_ID = iw.IWork_ID inner  join dbo.IPack ip on ip.PID = iw.PID where ip.TNum = @parameter_value group by ip.TNum
 
The linq is the following:
 
var  varGoodTransCount = (from t in rData.Trans join iw in rData.Ibooks on t.Ibook_ID equals iw.Ibook_ID join ip in rData.IPacks on iw.PID equals ip.PID where ip.TNum == SPkgID group ip by ip.TNum into g select new { TNum = g.Key, Frequency = g.Count() }).FirstOrDefault();

I am checking for if (varGoodTransCount.frequency != null) when the error is occuring.

Thus can you tell me what could be wrong?
GeneralRe: C# linq group by Pin
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QuestionCrystal Reports : Database Login Prompt Issue Pin
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QuestionAggregate data into 5 min interval Pin
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QuestionC# linq Pin
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Question.exe Reference Problem - maybe Pin
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Questionhow to setting Four tier application in my application? Pin
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Questionsqldatabaseconnectivity Pin
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