Linq Mysql GroupBy语句的问题处理

                var resumeList = db.ChannelResume.Where(model);
                var groupValues = resumeList.GroupBy(t => new {t.AgentId, t.AgentName});
                var statistics = groupValues.Select(c => new ResumeStatisticsViewModel()
                {
                    Date = dateSpan,
                    AgentId = c.Key.AgentId,
                    AgentName = c.Key.AgentName,
                    TotalCount = c.Count(),
                    ValidCount = c.Count(k => k.Status == (int)ResumeStatus.Valid)
                });
                try
                {
                    //statistics = statistics.OrderBy(c => c.AgentName);
                    var tmp = statistics.ToList();
                    
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                    throw;
                }

                var resumeList = db.ChannelResume.Where(model);
                var groupValues = resumeList.GroupBy(t => new {t.AgentId, t.AgentName});
                foreach (var item in groupValues)
                {
                    var viewModel = new ResumeStatisticsViewModel()
                    {
                        Date = dateSpan, 
                        AgentId = item.Key.AgentId, 
                        AgentName = item.Key.AgentName,
                        TotalCount=item.Count(),
                        ValidCount = item.Count(t => t.Status == (int)ResumeStatus.Valid)
                    };
                    result.Add(viewModel);
                }

                return new PagedList<ResumeStatisticsViewModel>(result, m.Page, m.PageSize);