Question

I have the following method that is used to filter an ObjectQuery by date using EF:

public List<T> FilterObjectSetByDate<T>(ObjectQuery<T> inputQuery, string dateColumn) where T : class
{
    ObjectQuery<T> filteredQuery = inputQuery.Where("(dateadd(dd,0, datediff(dd,0, it" + dateColumn + ")) = @p0)");
    ObjectParameter objParam = new ObjectParameter("p0", DateTime.Now);
    filteredQuery.Parameters.Add(objParam);

    return filteredQuery.ToList();
}      

Which leads to the following error:

'dateadd' cannot be resolved into a valid type or function.

Is there any way to return a list of records for a given day (ignoring the time portion of the DateTime) using Entity Framework?

Answer 1

Ok figured this out this morning:

Where("SqlServer.datediff('DAY'," + dateColumn + ", @p{1}) = 0")