Luca Romagnoli Luca Romagnoli - 1 year ago 75
C# Question

LINQ to Entities does not recognize the method ElementAt(i);

I'm using the method

elementat(Int32)
to get a specific element of a query's result.

var mds = db.TDP_MissioniDestinazioni.Where(p => p.MissioneID == missioneRow.MissioneID);

destinazioneRow = mds.ElementAt(i);



LINQ to Entities does not recognize the method
'TimeEntModel.TDP_MissioniDestinazioni
ElementAt[TDP_MissioniDestinazioni]

(System.Linq.IQueryable`1[TimeEntModel.TDP_MissioniDestinazioni],
Int32)' method, and this method cannot be translated into a store
expression.


Why am I getting this error and how can I fix it?

Answer Source

Are you happy to fetch all the "earlier" results? If so, either call ToList() to cache them, or AsEnumerable() to fetch them on each call, with the AsEnumerable just being a way to force the compiler to call Enumerable.ElementAt instead of Queryable.ElementAt.

There may be a better way (e.g. using Take or Skip) though - could you give more information about the bigger picture?

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