Question

 var query = _context.POS_ItemPriceListMaster.Where(c => c.FromDate >= FromDate && c.ToDate <= FromDate).Select(t=> t.ItemPriceListMasterID);
        var query2 = from c in _context.POS_ItemPriceList
                         where query.Contains(c.ItemPriceListMasterID)
                         select c;

I want to do this but there are no result in query although there are data with from date
In database field is datetime

Answer 1

I assume c.FromDate and c.ToDate are dates without time information and FromDate is a date with time information.

To fix your query, remove the time from FromDate:

var fromDateWithoutTime = FromDate.Date;

var query = _context.POS_ItemPriceListMaster
                    .Where(c => c.FromDate >= fromDateWithoutTime
                                && c.ToDate <= fromDateWithoutTime)
                    .Select(t=> t.ItemPriceListMasterID);