给OPCUC后台服务添加了更新类型

Data/Entities/DbVariableData.cs

@@ -100,6 +100,12 @@ public class DbVariableData
     [SugarColumn(ColumnDataType = "varchar(20)",IsNullable =true, SqlParameterDbType = typeof(EnumToStringConvert))]
     public PollLevelType PollLevelType { get; set; }
 
+    /// <summary>
+    /// OPC UA更新类型，例如轮询或订阅。
+    /// </summary>
+    [SugarColumn(ColumnDataType = "varchar(20)", IsNullable = true, SqlParameterDbType = typeof(EnumToStringConvert))]
+    public OpcUaUpdateType OpcUaUpdateType { get; set; }
+
     /// <summary>
     /// 指示变量是否已被逻辑删除。
     /// </summary>