添加项目文件。

WPFWCSDemo/Services/ManualOperation/DeleteTask.cs

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+using System;
+using System.Collections.Generic;
+using System.Data.SqlClient;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WPFWCSDemo.Models;
+using WPFWCSDemo.Models.Tables;
+using WPFWCSDemo.StateCode;
+using WPFWCSDemo.Utilities;
+
+namespace WPFWCSDemo.Services.ManualOperation
+{
+    public class DeleteTask :IDeleteTask
+    {
+        /// <summary>
+        /// 移除指定任务记录
+        /// </summary>
+        /// <param name="taskHistory">任务历史记录</param>
+        public void Delete(TaskHistory taskHistory)
+        {
+            SqlHelper.ExecuteNonQuery("UPDATE TASK_HISTORY SET TASKSTATE=@TaskState,FINISHTIME=@FinishTime WHERE TASKID=@TaskId",
+                new SqlParameter("@TaskId", taskHistory.TaskId),
+                new SqlParameter("@FinishTime", taskHistory.FinishTime),
+                new SqlParameter("@TaskState", TaskStateCode.Task_Finish_Cancel));
+
+
+
+            //SqlHelper.ExecuteNonQuery("INSERT INTO TASK_HISTORY " +
+            //    "SELECT * FROM TASK WHERE (TaskId=@TaskId)",
+            //    new SqlParameter("@TaskId", taskHistory.TaskId),
+            //    new SqlParameter("@TaskState", taskHistory.TaskStateCode));
+
+            ////2--------------在历史表中响应任务数据中修改其【taskstate】值
+            //SqlHelper.ExecuteNonQuery("UPDATE TASK_HISTORY SET TASKSTATE=@TaskState,FINISHTIME=@FinishTime WHERE TASKID=@TaskId",
+            //    new SqlParameter("@TaskId", taskHistory.TaskId),
+            //    new SqlParameter("@FinishTime", taskHistory.FinishTime),
+            //    new SqlParameter("@TaskState", taskHistory.TaskStateCode));
+
+            ////3--------------移除【调度管理】表数据
+            //SqlHelper.ExecuteNonQuery("DELETE FROM TASK WHERE TaskId=@TaskId",
+            //    new SqlParameter("@TaskId", taskHistory.TaskId));
+        }
+    }
+}