/// <summary>

        /// 线程控制模块

        /// </summary>

        private ManualResetEvent manualResetEvent = new ManualResetEvent(false);

        /// <summary>

        /// 配合使用

        /// </summary>

        private AutoResetEvent autoResetEvent = new AutoResetEvent(true);

        private AsyncOperation asyncOperation = AsyncOperationManager.CreateOperation(null);

        /// <summary>

        /// 存储状态

        /// </summary>

        private bool suspend;

        /// <summary>

        /// 委托操作模块

        /// </summary>

        /// <param name="str"></param>

        private delegate void InvokeDelegate(string str);

        private delegate void InvokeMessage(int result);

        private delegate string[] InvokeMessageResult(int result);

        private delegate void InvokeListView(string oneValue, string twoValue, string threeValue, string four,string five);

        private delegate void InvokeMessageUI(string msg, string value);

        private delegate void InvokeMessageViewUI(string[] value);

        private delegate void InvokeExecute();

        /// <summary>

        ///

        /// </summary>

        private bool formClosed = false;         

        private void btnDowload_Click(object sender, EventArgs e)

        {

            //启动下载任务

            if (this.btnDowload.Tag == null)

            {

                ThreadPool.QueueUserWorkItem(delegate

                {

                    ExecuteDownload(this.txtPath.Text);

                });

            }

            else if (this.btnDowload.Tag.ToString() == "Run")

            {

                this.suspend = true;

                manualResetEvent.Reset();

                //autoResetEvent.Reset();//另一种方式

                //更改执行按钮状态

                EvenInvokeButtionProcess("继续下载", "Reset");

            }

            else if (this.btnDowload.Tag.ToString() == "Reset")

            {

                //

                this.suspend = false;

                manualResetEvent.Set();

                //autoResetEvent.Set();//另一种方式

                //更改执行按钮状态

                EvenInvokeButtionProcess("暂停下载", "Run");

            }

            /** ----------------------------------------

             * ThreadPool.QueueUserWorkItem(delegate

             *   {

             *       ExecuteDownload(this.txtPath.Text);

             *   });

             * -----------------挂起下载任务------------

             *  this.suspend = true;

             *  manualResetEvent.Reset();

             *  //autoResetEvent.Reset();//另一种方式

             *  -----------------唤醒下载任务-------------

             *  this.suspend = false;

             *  manualResetEvent.Set();

             *  //autoResetEvent.Set();//另一种方式

             ***/

        }

        /// <summary>

        /// 下载档案文件

        /// </summary>

        public void ExecuteDownload(string savePath)

        {

            //EvenInvokeButtionState("btnDowload", "false");

            //更改执行按钮状态

            EvenInvokeButtionProcess("暂停下载", "Run");

            //更改控件展示状态

            EvenInvokeButtionState("btnGet", "false");

            //初始化进度条

            EventInvokeProgresBarInit();

            //初始化进度条最大值

            int count = this.listView1.Items.Count;

            EventProgresMaximum(count);

            //this.listView1.Items 的下标从0开始，所以取值时，下标为 Count - 1

            for (int i = this.listView1.Items.Count; i > ; i--)

            {

                int rowIndex = ;

                //1.取得一条数据，

                if (i == )

                {

                    rowIndex = i;

                }

                else

                {

                    rowIndex = i - ;

                }

                /**

                * this.listView1.Items 的下标从0开始，所以取值时，下标为 Count - 1,因为 Count 计数器，是从 1开始记录，所以相差1

                * */

                EventListViewSelected(rowIndex);

                //获取列表

                string[] ls = EventListViewGet(rowIndex);

                //更新操作状态

                EventInvokeListBoxText("---------------------------------------------------------", "");

                EventInvokeListBoxText("开始下载:", ls[].ToString() + "档案文件");

                //更新比例

                EventProgresTipText(count.ToString(), "/" + (rowIndex));

                //执行下载操作

                ExecuteDownload(ls[].ToString(), ls[].ToString(), savePath);

                //将比对完成之后的数据移除

                EventListViewRemoveAt(rowIndex);

                //更新进度条状态

                EventInvokeProgresBar();

                //---------------------------------------------------------------------------

                if (formClosed)

                {

                    return;

                }

                //监听任务状态

                if (suspend)

                {

                    //更改执行按钮状态

                    EvenInvokeButtionProcess("继续下载", "Reset");

                    //挂起任务

                    this.manualResetEvent.WaitOne();

                }

                /** -------------------------另一种方式-------------------------------------

                 *  if (suspend)

                 *   {

                 *       this.autoResetEvent.WaitOne();

                 *   }

                 *   asyncOperation.Post(delegate { EventMessageBox(str); }, str);

                 **/

            }

            //更新进度条状态

            EventInvokeProgresBar(-); //-100 为状态位

            //设置按钮状态

            EvenInvokeButtionState("btnGet", "true");

            //EvenInvokeButtionState("btnDowload", "true");

            //更改执行按钮状态

            EvenInvokeButtionProcess("文件下载", null);

            //数据加载完毕,设置提示信息

            EventInvokeListBoxText("---------------------------------------------------------","");

            EventInvokeListBoxText("执行状态:", "档案文件已经下载完毕,等待相关任务执行中.........");

        }

        /// <summary>

        /// 进度提示委托

        /// </summary>

        /// <param name="mes"></param>

        /// <param name="value"></param>

        public void EventInvokeListBoxText(string msg, string value)

        {

            this.Invoke(new InvokeMessageUI(InvokeListBoxText), new object[] { msg, value });

        }

        /// <summary>

        /// 进度提示条改变

        /// </summary>

        /// <param name="mes"></param>

        /// <param name="value"></param>

        public void InvokeListBoxText(string msg, string value)

        {

            if (this.listBox1.Items.Count == )

            {

                this.listBox1.Items.Insert(, msg + value);

            }

            else

            {

                this.listBox1.Items.Insert(this.listBox1.Items.Count -, msg + value);

            }

            //this.listBox1.SelectedIndex = this.listBox1.Items.Count - 1;

            this.listBox1.TopIndex = this.listBox1.Items.Count - (int)(this.listBox1.Height / this.listBox1.ItemHeight);

        }

        /// <summary>

        ///

        /// </summary>

        /// <param name="msg"></param>

        /// <param name="value"></param>

        private void EvenInvokeButtionProcess(string msg, string value)

        {

            this.Invoke(new InvokeMessageUI(InvokeButtionProcessUI), new object[] { msg, value });

        }

        private void InvokeButtionProcessUI(string msg, string value)

        {

            this.btnDowload.Tag = value;

            this.btnDowload.Text = msg;

        }