调整搜索问题

Areas/Admin/Controllers/MainServer/PosMachinesTwoController.cs

@@ -817,7 +817,7 @@ namespace MySystem.Areas.Admin.Controllers
             }
             if (!string.IsNullOrEmpty(PosSn))
             {
-                condition += " and PosSn =" + PosSn + "";
+                condition += " and PosSn ='" + PosSn + "'";
             }
 
             if (!string.IsNullOrEmpty(RecycEndDateData))