添加DataHelper进实体类

UAS-MES/Entity/SystemInf.cs

@@ -71,5 +71,7 @@ namespace UAS_MES.Entity
         public static string CacheFilePath= Environment.GetEnvironmentVariable("windir").Substring(0, 1) + @":\UAS_MES\CacheFile\CacheInfo.xml";
 
         public static bool UpperCollection = true;
+
+        public static DataOperate.DataHelper dh;
     }
 }