解决预收款明细如果记录为0报错的问题

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

@@ -2002,7 +2002,7 @@ namespace Bailun.DC.Web.Areas.Reports.Controllers
                     cost_tail = countM.cost_tail.ToString("N2"),
                     cost_first = countM.cost_first.ToString("N2"),
                     profit_total = countM.profit_total.ToString("N2"),
-                    profit_rate = ((countM.profit_total / countM.cost_total) *100).ToString("N2")
+                    profit_rate = countM.cost_total>0?((countM.profit_total / countM.cost_total) *100).ToString("N2"):"0"
                 }
             });
         }