C# EF Linq bitwise question

Question

Ok for example, I am using bitwise like such: Monday = 1, Tuesday = 2, Wednesday = 4, Thursday = 8 etc...

I am using an Entity Framework class of Business.

I am

Answer 1

You must decompose the long value(bitflagged enum will be better) to it's parts then pass it to Where

return c.Businesses.Where(o=> DecomposeDays(dayParam).Any(day => day==o)).ToList();

EDIT: decompose method:

private static IEnumerable DecomposeDays(byte dayParam)
{
    var daysOfWeek = new List { 1, 2, 4, 6, 8 ,16};
    return daysOfWeek.Where(o => (o & dayParam) == dayParam);
}