How to compare only date components from DateTime in EF?

Question

I am having two date values, one already stored in the database and the other selected by the user using DatePicker. The use case is to search for a particular date from the

Answer 1

I think this could help you.

I made an extension since I have to compare dates in repositories filled with EF data and so .Date was not an option since it is not implemented in LinqToEntities translation.

Here is the code:

        /// 

    /// Check if two dates are same
    /// 
    /// Type
    /// date field
    /// date compared
    /// bool
    public Expression> IsSameDate(Expression> valueSelector, DateTime value)
    {
        ParameterExpression p = valueSelector.Parameters.Single();

        var antes = Expression.GreaterThanOrEqual(valueSelector.Body, Expression.Constant(value.Date, typeof(DateTime)));

        var despues = Expression.LessThan(valueSelector.Body, Expression.Constant(value.AddDays(1).Date, typeof(DateTime)));

        Expression body = Expression.And(antes, despues);

        return Expression.Lambda>(body, p);
    }

then you can use it in this way.

 var today = DateTime.Now;
 var todayPosts = from t in turnos.Where(IsSameDate(t => t.MyDate, today))
                                      select t);