自定义查询,多个相同字段bug问题

Areas/Admin/Controllers/MainServer/CustomQueryDoController.cs

@@ -50,7 +50,10 @@ namespace MySystem.Areas.Admin.Controllers
                 string[] fieldData = m.Value.Replace("${", "").Replace("}$", "").Split('|');
                 string fieldName = fieldData[0];
                 string Title = fieldData[1];
-                query.Add(fieldName, Title);
+                if(!query.ContainsKey(fieldName))
+                {
+                    query.Add(fieldName, Title);
+                }
             }
             ViewBag.query = query;