public async Task <PagingDataSource <Staff> > Get(ODataQueryOptions <Staff> options, [FromUri] StaffList req) { StaffService.DisableProxy(); var litStaff = StaffService.GetAll(); if (req != null) { if (req.Includes != null && req.Includes.Length > 0) { litStaff = Include(litStaff, req.Includes); } if (req.PositionId > 0) { litStaff = litStaff.Where(o => o.PositionId == req.PositionId); } } var ls = (IQueryable <Staff>)options.ApplyTo(litStaff); var retVal = new PagingDataSource <Staff>(); retVal.Data = await ls.Cast <Staff>().ToListAsync(); retVal.Total = Request.GetInlineCount() ?? 0; return(retVal); }