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I have one list in which there is field with the datatype of Yes/No. I am trying to retrieve data of that field but it is giving me following error :

System.InvalidCastException: Specified cast is not valid. at Microsoft.SharePoint.Linq.SPQueryable.GetSPFieldValue[T](PropertyMap pm, DataContext dc, SPListItem item, Object entity, JoinPath joinPath) at lambda_method(ExecutionScope , SPListItem ) at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Collections.Generic.List1..ctor(IEnumerable1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)

My query is as follows:

var query = (from san in db.San
             select san.IsDeclaredCompleted).ToList();

So can anyone suggest me what i am doing wrong?

1 Answer 1

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Try to put ToList() method after db.San: db.San.ToList()
more detail

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  • i have tried it.....and only thing changed is the error....
    – Stark
    Jul 16, 2012 at 11:22

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