Hi,

I have consumed LibraryService wcf under workarea and invoking GetList method, below code tries to fetch all librarydata instances for which parentId = 157. code is throwing exception NullRefernceException.

http://abc/workarea/services/LibraryService.svc

            ServiceReference2.LibraryManagerClient m = new ServiceReference2.LibraryManagerClient();
            var result = m.GetList(new ServiceReference2.LibraryCriteria
            {
                _filterGroups = new ServiceReference2.CriteriaFilterGroupOfLibraryProperty54GRdyE_P[]
                {
                    new ServiceReference2.CriteriaFilterGroupOfLibraryProperty54GRdyE_P
                    {
                         _filters = new ServiceReference2.CriteriaFilterOfLibraryProperty54GRdyE_P[]
                         {
                             new ServiceReference2.CriteriaFilterOfLibraryProperty54GRdyE_P
                             {
                                  Fieldk__BackingField = ServiceReference2.LibraryProperty.ParentId,
                                  Operatork__BackingField = ServiceReference2.CriteriaFilterOperator.EqualTo,
                                  Valuek__BackingField = 157
                             }
                         }
                    }
                }
                UseAggregationk__BackingField = false                
            });

I have managed to capture the in/out soap envelops as follows. I executed GetList method of ContentService which also gives NullReference exception. Is it generic problem with GetList? Criteria object looks to be constructed correct.

Request:

	
		GetList
		urn:uuid:8719780a-c16e-4fef-9f44-f14dcae8bad5
		
			http://www.w3.org/2005/08/addressing/anonymous
		
		http://192.168.40.151/workarea/services/LibraryService.svc
	
	
		
			
				<_columns i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common" />
				<_filtergroups i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common" />
				<_logicaloperation xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">And
				<_x003c_aggregatefield_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">Id
				<_x003c_groupbyfield_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">Id
				<_x003c_groupbyoperation_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">None
				<_x003c_orderbydirection_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">Descending
				<_x003c_orderbyfield_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">Id
				<_x003c_paginginfo_x003e_k__backingfield i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common" xmlns:c="http://schemas.datacontract.org/2004/07/Ektron.Cms" />
				<_x003c_requiredfiltergroup_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">
					<_filters>
						
							<_x003c_field_x003e_k__backingfield>ParentId
							<_x003c_operator_x003e_k__backingfield>EqualTo
							<_x003c_value_x003e_k__backingfield i:type="c:int" xmlns:c="http://www.w3.org/2001/XMLSchema">157
						
					
					<_x003c_condition_x003e_k__backingfield>And
				
				<_x003c_requiredfiltersql_x003e_k__backingfield i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common" />
				<_x003c_useaggregation_x003e_k__backingfield xmlns="http://schemas.datacontract.org/2004/07/Ektron.Cms.Common">false
			
		
	


Response:

	
		http://schemas.microsoft.com/net/2005/12/windowscommunicationfoundation/dispatcher/fault
		urn:uuid:8719780a-c16e-4fef-9f44-f14dcae8bad5
	
	
		
			
				s:Receiver
				
					a:InternalServiceFault
				
			
			
				Object reference not set to an instance of an object.
			
			
				
					
					
					Object reference not set to an instance of an object.
					   at Ektron.Cms.Common.Criteria`1.GenerateSql(DbCommand command, Dictionary`2 columnMap, String& columnList, String& whereClause, String& orderByClause)
   at Ektron.Cms.Common.Criteria`1.GenerateSql(DbCommand command, Dictionary`2 columnMap, String& whereClause, String& orderByClause)
   at Ektron.Cms.Common.Criteria`1.PopulateCommand(DbCommand command, Dictionary`2 columnMap, String tableName)
   at Ektron.Cms.BusinessObjects.Core.Content.LibraryManagerDal.GetList(LibraryCriteria criteria)
   at Ektron.Cms.BusinessObjects.Core.Content.LibraryManager.GetList(LibraryCriteria criteria)
   at SyncInvokeGetList(Object , Object[] , Object[] )
   at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)
					System.NullReferenceException
				
			
		
	

Thanks for advance for any help.