处理无数据问题

New_College.Api/Controllers/Front/LibraryController.cs

@@ -55,6 +55,16 @@ namespace New_College.Api.Controllers.Front
 
             var biaozhun = await _ScoreLineServices.Query(c => (c.Score == queryDto.Score.ToString() || c.Score == (queryDto.Score - 1).ToString()) && c.Province == queryDto.Pronvice && c.Years == queryDto.Years);
             var lines = biaozhun.Select(s => s.SumCount).ToArray();
+            if (biaozhun.Count() <= 0)
+            {
+
+                return new MessageModel<List<SameScoreLineDataDto>>()
+                {
+                    success = false,
+                    msg = "暂无数据",
+                    status = 200
+                };
+            }
             var query = await _ScoreLineServices.Query(c => SqlFunc.Between(c.SumCount, lines.Min(), lines.Max()) && c.Province == queryDto.Pronvice);
             //var newscore = queryDto.Score - 1;
             //var tmpquery = await _ScoreLineServices.Query(c => c.Score == newscore.ToString() && c.Province == queryDto.Pronvice);