Not able to query locally cached data

Hi,

I'm not able to retrieve data I've cached locally.  The second block of code (below) works fine when I am connected to the database.  However, when I am not connected to the database I get a "Sequence contains no elements" error.  The stack trace is at the bottom.

Here is the code used to save the cache state (seems to work fine):

EntityQuery<LOCAL_STRING> localStringQuery = null;         localStringQuery =             (from ls in domainEntityManagerService.DomainEntityManager.LOCAL_STRING             select ls);         domainEntityManagerService.DomainEntityManager.CacheStateManager.SaveCacheState("c:\localization.bin");

Here is the code used to query the table/cache.  The RestoreFromCache() method works fine -- it is the line in red throwing the exception.  I may be going about this the wrong way, so hopefully someone can't point me in the right direction.  Is it not possible to use LINQ queries against locally cached data?  Thanks!

private EntityQuery<LOCAL_STRING> localStringQuery = null;         public object GetValue(string localKey)         {             try             {                 if (domainEntityManagerService.DomainEntityManager.IsConnected == false &&                     domainEntityManagerService.DomainEntityManager.IsLoggedIn == false)                 {                     domainEntityManagerService.DomainEntityManager.DefaultQueryStrategy = QueryStrategy.CacheOnly;                     domainEntityManagerService.DomainEntityManager.CacheStateManager.RestoreCacheState("c:\localization.bin");                 }                 localStringQuery =                     (from ls in domainEntityManagerService.DomainEntityManager.LOCAL_STRING                      where ls.LOCAL_KEY == localKey                      select ls);                 return localStringQuery.First().LOCAL_TEXT;             }             catch ( Exception ex )             {                  ...             }             return null;         }

"   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)\r\n   at lambda_method(ExecutionScope )\r\n   at System.Linq.EnumerableExecutor`1.Execute()\r\n   at System.Linq.EnumerableExecutor`1.ExecuteBoxed()\r\n   at System.Linq.EnumerableQuery`1.System.Linq.IQueryProvider.Execute(Expression expression)\r\n   at IdeaBlade.EntityModel.v4.EntityQuery`1.ExecuteCacheQuery(Guid queryGuid)\r\n   at IdeaBlade.EntityModel.v4.EntityQueryFinder.ExecuteFind(Guid queryGuid)\r\n   at IdeaBlade.EntityModel.v4.EntityQueryFinder.Execute()\r\n   at IdeaBlade.EntityModel.v4.EntityManager.ExecuteQueryCore(IEntityQuery query, Boolean isAsync)\r\n   at IdeaBlade.EntityModel.v4.EntityManager.ExecuteQueryForObject(IEntityQuery query)\r\n   at IdeaBlade.EntityModel.v4.EntityQuery`1.System.Linq.IQueryProvider.Execute[TResult](Expression expression)\r\n   at System.Linq.Queryable.First[TSource](IQueryable`1 source)\r\n   at Jenzabar.EX.Infrastructure.Localization.LocalizationProvider.GetValue(String localKey) in C:\\Documents and Settings\\...\\LocalizationProvider.cs:line 79"

Thanks Kim -- I had not yet executed the query.  Now I feel a little silly.  :-)  I had removed an earlier query and subsequent execution code but never added it back.  I was seeing the cache file being created, but now I realize it doesn't mean actual data was saved.  I think that's what hung me up.  Looking at the cache file in a text editor with and without data shows a big difference.  Thanks again.

For anyone interested in what I changed, please see the line in red:

EntityQuery<LOCAL_STRING> localStringQuery = null; localStringQuery =     (from ls in domainEntityManagerService.DomainEntityManager.LOCAL_STRING     select ls); localStringQuery.Execute<LOCAL_STRING>(); domainEntityManagerService.DomainEntityManager.CacheStateManager.SaveCacheState("c:\localization.bin");