解决逻辑仓库部分字段无法查看趋势图的问题

Bailun.DC.Web/Areas/Reports/Controllers/WarehouseController.cs

@@ -1699,6 +1699,8 @@ namespace Bailun.DC.Web.Areas.Reports.Controllers
             var listval = new List<string>();
             var listdate = new List<string>();
 
+            obj = obj.Where(a => !string.IsNullOrEmpty(a)).ToList();
+
             if (obj.Count>0)
             {
                 foreach (var item in obj)