private IEnumerable <Order> InitCollectionByQuerry(NameValueCollection queryString)
{
var filter = new OrdersCollectionFilter(connectionString, providerName);
var constraintParser = new QueryStringParser(queryString);
return(filter.GetFilteredCollection(constraintParser));
}
public IEnumerable <Order> GetFilteredCollection(QueryStringParser constraints)
{
var resultCollection = dbContext.GetAllByCustomer(constraints.CustID);
if (constraints.IsDateFromExist())
{
resultCollection = resultCollection.Where(o => o.OrderDate >= constraints.DateFrom);
}
if (constraints.IsDateToExist())
{
resultCollection = resultCollection.Where(o => o.OrderDate <= constraints.DateTo);
}
if (constraints.IsSkipExist())
{
resultCollection = resultCollection.Skip(constraints.Skip);
}
if (constraints.IsTakeExist())
{
resultCollection = resultCollection.Take(constraints.Take);
}
return(resultCollection);
}