How to get all items from result of search request

Hi,

Could you please help me to get a collection of all ValidatedInstrument are returned by search request.

My code:

SearchContext.Preferences.MaxPageSize = null;
EquitySearchRequest request = EquitySearchRequest.Create(
	null, //Sub types
	null, //Asset categories
	null, //Company name
	null, //Currency codes
	null, //Description
	null, //Domiciles codes
	null, //Fair value indicator
	new[] { "NYS" }, //Exchange codes
	null, //GICs codes
	null, //File codes
	null, //Org identifier
	null, //Asset status
	null, //Ticker
	IdentifierType.Ric, //Identifier types
	null, //Identifier
	IdentifierType.Ric);
IDssEnumerable<ValidatedInstrument> results = SearchContext.EquitySearch(request);
var list = new List<ValidatedInstrument>();
list.AddRange(results); // adds 250 items
while (results.HasNextPage)
{
	results = SearchContext.EquitySearch(results.NextLink); // throws exception
	list.AddRange(results);
}

Exception details:

ThomsonReuters.Dss.Api.ValidationException was unhandled by user code
  Context=NullObjectSpace
  HResult=-2146233088
  Message=Value cannot be null.
ParameterName=SearchRequest
  Method=POST
  RequestCorrelationId=251d15f9-9f45-4ea9-9e59-20846da21109
  RetryCount=0
  ServerAppVersion=11.2.662.64
  Source=ThomsonReuters.Dss.RestApi.Client
  StatusCode=400
  Url=https://hosted.datascopeapi.reuters.com/RestApi/v1/Search/EquitySearch?$skiptoken='????'
  StackTrace:
       at ThomsonReuters.Dss.Api.Core.HttpOData.Http.HttpClientExceptionDecorator.<ParseResponseError>d__1b.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\HttpOData\Http\HttpClientExceptionDecorator.cs:line 284
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.HttpOData.Http.HttpClientExceptionDecorator.<HandleExceptions>d__11.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\HttpOData\Http\HttpClientExceptionDecorator.cs:line 169
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at ThomsonReuters.Dss.Api.Core.HttpOData.Http.HttpClientExceptionDecorator.<HandleExceptions>d__11.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\HttpOData\Http\HttpClientExceptionDecorator.cs:line 201
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.HttpOData.Http.HttpAsyncJobStrategy.<InvokeAsync>d__0.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\HttpOData\Http\HttpAsyncJobStrategy.cs:line 33
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.HttpOData.HttpODataClient.<InternalExecuteAsync>d__87.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\HttpOData\HttpODataClient.cs:line 552
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.HttpOData.HttpODataClient.<ExecuteAsync>d__7d`1.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\HttpOData\HttpODataClient.cs:line 525
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.OperationsBaseForHttpODataClient.<CallOnHttpODataClient>d__10b`1.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\OperationsBaseForHttpODataClient.cs:line 0
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.Helper.<ReAuthenticateIfNecessaryAsync>d__6`1.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\Helper.cs:line 0
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Api.Core.OperationsBaseForHttpODataClient.<ExecuteAsync>d__a0`1.MoveNext() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\OperationsBaseForHttpODataClient.cs:line 0
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at ThomsonReuters.Dss.Core.RestApi.Threading.Tasks.AsyncHelper.RunSync[TResult](Func`1 func) in d:\BuildAgent\work\70c2df2f37febbb5\src\Core\Threading\Tasks\AsyncHelper.cs:line 25
       at ThomsonReuters.Dss.Api.Core.OperationsBase.InvokeSynchronously[T](Func`1 action) in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\OperationsBase.cs:line 397
       at ThomsonReuters.Dss.Api.DssDataServiceContext.<>c__DisplayClassf`1.<Execute>b__e() in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\DssDataServiceContext.cs:line 278
       at ThomsonReuters.Dss.Api.Core.Helper.ReAuthenticateIfNecessary[T](IDssDataServiceContext context, Func`1 method) in d:\BuildAgent\work\70c2df2f37febbb5\src\ServiceLayer\ServiceLayer.Client\Core\Helper.cs:line 40
       at ThomsonReuters.Dss.Api.Search.SearchContext.EquitySearch(ResourceLink`1 nextOrDeltaLink) in d:\BuildAgent\work\70c2df2f37febbb5\src\Api\RestApi.Client\SearchClientApi.generated.cs:line 423

I'm not sure that my code is correct, because it wtitten in different style as, for example, to collect instrument lists:

internal static List<InstrumentList> GetInstrumentLists(this ExtractionsContext context)
{
	var result = new List<InstrumentList>();
	var list = context.InstrumentListOperations.GetAll(); // get the first page of instrument lists (default page size is 250)
	do
	{
		result.AddRange(list);
		list = (list.HasNextPage ? context.InstrumentListOperations.GetAll(list.NextLink) : null); // goto next page in loop to retrieve all instrument lists
	}
	while (list != null);
	return result;
}

because I can't find any *Operations method in the SearchContext.

RestAPI client v.11.2.662.0.

Thanks!