Errors when searching DateTime fields

[xumix]

I have my system configured with ru-RU locale, this is what I get if I try to search within DateTime fields

tourMap.Property(p => p.StartDate).Stored();
query = query.Where(q => q.EndDate <= date1);

System.FormatException occurred
  HResult=-2146233033
  Message=String was not recognized as a valid DateTime.
  Source=mscorlib
  StackTrace:
       at System.DateTimeParse.ParseExact(String s, String format, DateTimeFormatInfo dtfi, DateTimeStyles style)
       at Lucene.Net.Linq.Converters.DateTimeConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
       at Lucene.Net.Linq.Search.NonGenericConvertableFieldComparatorSource.NonGenericConvertableFieldComparator`1.<GetCurrentReaderValues>b__0(String s)
       at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
       at System.Linq.Enumerable.<CastIterator>d__b1`1.MoveNext()
       at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
       at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
       at Lucene.Net.Linq.Search.NonGenericConvertableFieldComparatorSource.NonGenericConvertableFieldComparator`1.GetCurrentReaderValues(IndexReader reader, Int32 docBase)
       at Lucene.Net.Linq.Search.FieldComparator`1.SetNextReader(IndexReader reader, Int32 docBase)
       at Lucene.Net.Search.TopFieldCollector.OneComparatorNonScoringCollector.SetNextReader(IndexReader reader, Int32 docBase) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\TopFieldCollector.cs:line 99
       at Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter, Collector collector) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 237
       at Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter, Int32 nDocs, Sort sort, Boolean fillFields) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 212
       at Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter, Int32 nDocs, Sort sort) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 194
       at Lucene.Net.Search.Searcher.Search(Query query, Filter filter, Int32 n, Sort sort) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\Searcher.cs:line 57
       at Lucene.Net.Linq.LuceneQueryExecutorBase`1.<ExecuteCollection>d__3`1.MoveNext()
       at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
       at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
       at RestChild.Booking.Logic.TourSearchService.SearchTours(SearchToursParams parameter) in c:\Projects\RestChild\RestChild.Booking.Logic\TourSearchService.cs:line 90
  InnerException: 

[xumix]

The error is here:
return DateTime.SpecifyKind(DateTime.ParseExact((string) value, format, null), DateTimeKind.Utc);
The value is: 2015-08-15t21:00:00 but the format is yyyy-MM-ddTHH:mm:ss

[xumix]

This is actually a blocker, since datetime fielda are not usable at all

[xumix]

Resolved with .NotAnalyzed() but this looks not intuitive

[xumix]

Now, more problems, the same query finds no documents for the specified dates
there are many post about this on SO
http://stackoverflow.com/questions/5495645/indexing-and-searching-date-in-lucene
my parsed query looks like this:

+(+(+StartDate:[2015-01-01T00:00:00 TO *] +EndDate:[* TO 2016-01-01T00:00:00]) +(HotelName:*чайка* HotelRegionName:*чайка*)) +TypeOfRest:2

If I remove date constraints then there are many items with dates like 2015-09-15T00:00:00 etc.

[xumix]

Finally got it working with .AsNumeric()

[chriseldredge]

Treating dates and times as numeric fields will generally result in faster range queries and is the recommended approach. It sounds like there may be bugs with string based indexing so I'll keep this open until I can look into it.