完成S7变量启用和停用更新

DMS.Application/Events/VariableChangedEventArgs.cs

@@ -0,0 +1,45 @@
+using DMS.Application.DTOs;
+using DMS.Core.Enums;
+
+namespace DMS.Application.Events
+{
+    /// <summary>
+    /// 变量变更事件参数
+    /// </summary>
+    public class VariableChangedEventArgs : System.EventArgs
+    {
+        /// <summary>
+        /// 变更类型
+        /// </summary>
+        public DataChangeType ChangeType { get; }
+
+        /// <summary>
+        /// 变量DTO
+        /// </summary>
+        public VariableDto Variable { get; }
+
+        /// <summary>
+        /// 关联的变量表DTO
+        /// </summary>
+        public VariableTableDto VariableTable { get; }
+
+        /// <summary>
+        /// 变更时间
+        /// </summary>
+        public DateTime ChangeTime { get; }
+
+        /// <summary>
+        /// 构造函数
+        /// </summary>
+        /// <param name="changeType">变更类型</param>
+        /// <param name="variable">变量DTO</param>
+        /// <param name="variableTable">关联的变量表DTO</param>
+        public VariableChangedEventArgs(DataChangeType changeType, VariableDto variable, VariableTableDto variableTable)
+        {
+            ChangeType = changeType;
+            Variable = variable;
+            VariableTable = variableTable;
+            ChangeTime = DateTime.Now;
+        }
+    }
+}