C#: Bitshift Permission

gistfile1.cs

public class Permission
{
    public class Access
    {
        public Permission.View.Customer Customer { get; set; }
        public Permission.View.Inventory Inventory { get; set; }
        public Permission.View.Order Order { get; set; }
        
    }

    public class View
    {
        public enum Order : byte
        {
            None = 0,
            Orders = 1 << 0,    // 00000001 (1)
            Drafted = 1 << 1,   // 00000010 (2)
            Create = 1 << 2     // 00000100 (4)
        }

        public enum Inventory : byte
        {
            None = 0,
            Items = 1 << 0,     // 00000001 (1)
            Import = 1 << 1     // 00000010 (2)

        }

        public enum Customer : byte
        {
            None = 0,
            Customers = 1 << 0,     // 00000001 (1)
            AddCustomer = 1 << 1    // 00000010 (2)
        }
    }

    public static bool HasPermission(byte userPermission, byte permissionsToCheck)
    {   
        // If userPermission contains the permissionsToCheck, it will return permissionsToCheck
        // Otherwise it will return 0 .. which could correspond to a enum of None = 0
        return ((userPermission & permissionsToCheck) == permissionsToCheck);
    }

}


// Checking Permission against user Permission
bool hasPermission = Permission.HasPermission((byte)_userPermissions, (byte)Permission.View.Order.Orders);