ScanClient/code/HXX.Scanner.Client/UI/frmMain4.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;
using System.IO;
using Microsoft.Win32;
using System.Net;
using System.Net.Http;
using System.Text.RegularExpressions;
using System.Runtime.InteropServices;

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Saraff.Tiff;
using Saraff.Tiff.Core;
using Saraff.Twain;
using HXX.Scanner.Client.Base;
using HXX.Scanner.Client.Properties;
using HXX.Scanner.Biz;
using HXX.Scanner.Common;
using HXX.Scanner.Biz.Socket;
using HXX.Scanner.Client.biz;

namespace HXX.Scanner.Client
{
    /// <summary>
    /// 主窗体
    /// </summary>
    public partial class frmMain4 : Form
    {
        public frmMain4()
        {
            //Font = new Font(Font.Name, 8.25f * 96f / CreateGraphics().DpiX, Font.Style, Font.Unit, Font.GdiCharSet, Font.GdiVerticalFont);
            CheckForIllegalCrossThreadCalls = false;
            InitializeComponent();

            SetStyle(
                ControlStyles.UserPaint |
                ControlStyles.AllPaintingInWmPaint |
                ControlStyles.OptimizedDoubleBuffer |
                ControlStyles.ResizeRedraw |
                ControlStyles.DoubleBuffer, true);

            this.DoubleBuffered = true;  
            this.UpdateStyles();
        }

        //扫描中心
        engine_twain32 engine;

        #region 页面转态变化提示

        /// <summary>
        /// 初始化计时器，页面各状态值
        /// </summary>
        public void initTimer()
        {
            //System.Windows.Forms.Timer formTimer = new System.Windows.Forms.Timer();
            //formTimer.Interval = 3000;//设置中断时间 单位ms
            //formTimer.Enabled = true;
            //formTimer.Tick += FormTimer_Tick;
            this.checkBox1.Checked = RegisterHelper.GetRun();//开机启动

            Task.Run(async () =>
            {
                while (true)
                {
                    this.Invoke(new Action(() =>
                    {
                        if (config_environment.scan_state)
                        {
                            this.lblTestA.Enabled = false;
                            this.lblTestAB.Enabled = false;
                        }
                        else
                        {
                            this.lblTestA.Enabled = true;
                            this.lblTestAB.Enabled = true;
                        }
                    }));

                    await FormTimer_Tick(null, null);
                    Thread.Sleep(10000);
                }
            });
        }

        /// <summary>
        /// 检查中状态
        /// </summary>
        private bool onCheck_status = true;
        /// <summary>
        /// 是否检查网络
        /// </summary>
        private bool to_check_net = true;
        /// <summary>
        /// 扫描仪状态
        /// </summary>
        private int scanner_status = 0;
        /// <summary>
        /// 磁盘状态
        /// </summary>
        private int disk_status = 1;
        /// <summary>
        /// 网络状态
        /// </summary>
        private int net_status = 1;
        /// <summary>
        /// 云端状态
        /// </summary>
        private int cloud_status = 1;

        /// <summary>
        /// 页面各状态检测
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        /// <returns></returns>
        private async Task FormTimer_Tick(object sender, EventArgs e)
        {
            ///1:检查扫描仪状态
            var scannerResult = await engine.check_status_ui();
            ///3:检查磁盘空间
            var diskResult = biz_disk.check_disk_status();

            if (to_check_net)
            {
                await checkAnswerCardServer();
                await check_net_status();
                //pingTestAsync();

                if (net_status == 1 && cloud_status == 1)
                {
                    to_check_net = false;
                }
            }

            this.Invoke(new Action(() =>
            {
                if (scannerResult.Status == 501 || scannerResult.Status == 509)
                {
                    scanner_status = 2;//未连接
                }
                else
                {
                    scanner_status = 1;
                }

                if (diskResult.Status == 200)
                {
                    disk_status = 1;
                }
                else if (diskResult.Status == 520)
                {
                    disk_status = 2;//请先设置数据存放位置
                }
                else if (diskResult.Status == 510)
                {
                    disk_status = 3;//磁盘剩余空间小于5G
                }
                else if (diskResult.Status == 509)
                {
                    disk_status = 4;//磁盘剩余空间小于500M
                }

                show_status();
            }));
        }

        /// <summary>
        /// 页面状态信息改变
        /// </summary>
        /// <param name="Status">0:正常 1:scanner异常，2：disk异常</param>
        private void show_status()
        {
            if (this.onCheck_status)
            {
                this.picStatus.Image = Properties.Resources._1;
            }
            else
            {
                if (this.scanner_status == 1 && this.disk_status == 1 && this.cloud_status == 1 && this.net_status == 1)
                {
                    //this.lab_banner.Text = "扫描环境检测完成，扫描设备已就位，可以开始进行扫描工作";
                    //this.pan_banner.BackColor = Color.FromArgb(236, 249, 228);
                    //this.lab_banner.ForeColor = Color.FromArgb(0, 192, 0);
                    //this.lab_banner.BackColor = Color.FromArgb(236, 249, 228);
                    //this.pic_banner.Image = Properties.Resources.校验_check_one_2x;

                    this.picStatus.Image = Properties.Resources.正常;
                    this.lbl_msg1.Text = "扫描环境检测完成";
                    this.lbl_msg2.Text = "可以开始扫描工作";
                }
                else
                {
                    if (this.scanner_status > 1)
                    {
                        //this.lab_banner.Text = "扫描仪连接异常，请检测扫描仪设备连接及驱动！";
                        //this.pan_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.lab_banner.ForeColor = Color.FromArgb(245, 87, 87);
                        //this.lab_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.pic_banner.Image = Properties.Resources.关闭_close_one_2x;

                        this.picStatus.Image = Properties.Resources.异常2;
                        this.lbl_msg1.Text = "扫描仪连接异常";
                        this.lbl_msg2.Text = "请检测扫描仪设备连接及驱动";

                        //新增，在有扫描仪连接的情况下，尝试启动
                        //if (this.cmbDeviceList.SelectedIndex >= 0)
                        //{
                        //    this.cmbDeviceList_SelectedIndexChanged(null, null);
                        //}
                    }
                    else if (this.net_status > 1)
                    {
                        //this.lab_banner.Text = "网络故障，无法上传文件，请检查网络。";
                        //this.pan_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.lab_banner.ForeColor = Color.FromArgb(245, 87, 87);
                        //this.lab_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.pic_banner.Image = Properties.Resources.关闭_close_one_2x;

                        this.picStatus.Image = Properties.Resources.异常2;
                        this.lbl_msg1.Text = "网络故障";
                        this.lbl_msg2.Text = "无法上传文件，请检查网络";
                    }
                    else if (this.cloud_status > 1)
                    {
                        //this.lab_banner.Text = "云服务器连接失败，请检查网络设置或联系技术人员。";
                        //this.pan_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.lab_banner.ForeColor = Color.FromArgb(245, 87, 87);
                        //this.lab_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.pic_banner.Image = Properties.Resources.关闭_close_one_2x;

                        this.picStatus.Image = Properties.Resources.异常2;
                        this.lbl_msg1.Text = "网络故障";
                        this.lbl_msg2.Text = "无法上传文件，请检查网络";
                    }
                    else if (this.disk_status == 2)
                    {
                        //this.lab_banner.Text = "请先设置数据存放位置";
                        //this.pan_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.lab_banner.ForeColor = Color.FromArgb(245, 87, 87);
                        //this.lab_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.pic_banner.Image = Properties.Resources.关闭_close_one_2x;

                        this.picStatus.Image = Properties.Resources.异常;
                        this.lbl_msg1.Text = "请先设置数据存放位置";
                        this.lbl_msg2.Text = "";
                    }
                    else if (this.disk_status == 4)
                    {
                        //this.lab_banner.Text = "数据存放目录空间不足，无法保存数据";
                        //this.pan_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.lab_banner.ForeColor = Color.FromArgb(245, 87, 87);
                        //this.lab_banner.BackColor = Color.FromArgb(254, 233, 233);
                        //this.pic_banner.Image = Properties.Resources.注意_attention_2x;

                        this.picStatus.Image = Properties.Resources.异常;
                        this.lbl_msg1.Text = "数据存放目录空间不足";
                        this.lbl_msg2.Text = "无法保存数据";
                    }
                    else if (this.disk_status == 3)
                    {
                        //this.lab_banner.Text = "磁盘剩余空间较少，建议清理或更换目录";
                        //this.pan_banner.BackColor = Color.FromArgb(253, 244, 232);
                        //this.lab_banner.ForeColor = Color.FromArgb(242, 191, 70);
                        //this.lab_banner.BackColor = Color.FromArgb(253, 244, 232);
                        //this.pic_banner.Image = Properties.Resources.注意_attention_2x;

                        this.picStatus.Image = Properties.Resources.异常;
                        this.lbl_msg1.Text = "磁盘剩余空间较少";
                        this.lbl_msg2.Text = "建议清理或更换目录";
                    }
                }

                if (this.scanner_status == 1)
                {
                    this.pic_scannerStatus.Image = Properties.Resources.对勾_1;
                    this.pl_scanner.BackgroundImage = Properties.Resources.Frame_7;
                }
                else
                {
                    this.pic_scannerStatus.Image = Properties.Resources.错_2x;
                    this.pl_scanner.BackgroundImage = Properties.Resources.Frame_14;
                }

                if (this.net_status == 1)
                {
                    this.picNetStatus.Image = Properties.Resources.对勾_1;
                    this.pl_net.BackgroundImage = Properties.Resources.Frame_7;
                }
                else
                {
                    this.picNetStatus.Image = Properties.Resources.错_2x;
                    this.pl_net.BackgroundImage = Properties.Resources.Frame_14;
                }

                if (this.cloud_status == 1)
                {
                    this.picCloudStatus.Image = Properties.Resources.对勾_1;
                    this.pl_cloud.BackgroundImage = Properties.Resources.Frame_7;
                }
                else
                {
                    this.picCloudStatus.Image = Properties.Resources.错_2x;
                    this.pl_cloud.BackgroundImage = Properties.Resources.Frame_14;
                }

                if (this.disk_status == 1)
                {
                    this.pic_diskStatus.Image = Properties.Resources.对勾_1;
                    this.pl_disk.BackgroundImage = Properties.Resources.Frame_7;
                }
                else
                {
                    this.pic_diskStatus.Image = Properties.Resources.感叹_2x;
                    this.pl_disk.BackgroundImage = Properties.Resources.Frame_12;
                }
            }
        }

        #endregion

        /// <summary>
        /// 主界面初始化
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain_Load(object sender, EventArgs e)
        {
            //this.Text = "慧教研扫描客户端";

            show_status();

            update_scan_side_check();

            engine = new engine_twain32(this, Settings.Default, this.change_scanner);

            showDataDir();
            this.lblInstallPath.Text = Application.StartupPath;
            biz_environment.init_unique_client_id();
            //biz_scannedBatch.Work();
            http_manager.on_net_broken = this.on_net_broken;
            http_manager.on_http_notify = this.on_http_notify;
            http_manager.on_http_notify2 = this.on_http_notify2;
            file_manager.on_http_notify2 = this.on_http_notify2;
            biz_startScan.on_http_notify2 = this.on_http_notify2;
            biz_startScan.on_startScan = this.on_startScan;
            biz_reUpload.on_startScan = this.on_startScan;

            this.toolTip1.IsBalloon = true;
            this.toolTip1.SetToolTip(this.lblInstallPath, this.lblInstallPath.Text);
            this.toolTip1.SetToolTip(this.lblDataPath, this.lblDataPath.Text);
            this.toolTip1.SetToolTip(this.but_min, "最小化");
            this.toolTip1.SetToolTip(this.but_close, "最小化到托盘");

            if (!biz_socketServer.Start(Settings.Default.webSocket_url))
            {
                MsgManager.Error("服务开启失败，请检查");
            }

            engine.load_tw_scanner_list();
            init_timer_auto_load_scanner();
            //lblRefreshDevice_LinkClicked(null, null);
            initTimer();
            //pingTestAsync();
            check_net_status();
            checkAnswerCardServer();
            update_scan_history();
            http_manager.start_http_upload();
            init_environment();
            new self_http_manager().Start();
            check_version();
        }

        //protected override CreateParams CreateParams
        //{
        //    get
        //    {
        //        CreateParams cp = base.CreateParams;
        //        // 移除 WS_CAPTION 样式（包括标题栏）
        //        cp.Style &= ~0x00C00000; // ~WS_CAPTION
        //        return cp;
        //    }
        //}

        /// <summary>
        /// 更新扫描历史信息
        /// </summary>
        private void update_scan_history()
        {
            Task.Run(() =>
            {
                while (true)
                {
                    var history = biz_scanHistory.get_history();

                    this.Invoke(new Action(() =>
                    {
                        this.lblStartTime.Text = history.last_start_time.ToString("HH:mm");
                        //this.lblScanElapse.Text = history.last_scan_elapse.ToString() + "秒";
                        this.lblScanElapse.Text = history.last_scan_elapse;
                        this.lblTotalSum.Text = history.total_sum.ToString() + "张";
                        this.lblSpeed.Text = history.last_speed.ToString() + "张/秒"; ;
                    }));

                    Thread.Sleep(1000);
                }
            });
        }

        /// <summary>
        /// 强杀驱动弹框
        /// </summary>
        private void update_scan_side_check()
        {
            Task.Run(() =>
            {
                while (true)
                {
                    biz_engine_side.check();
                    Thread.Sleep(50);
                }
            });
        }

        /// <summary>
        /// 根据插拔usb，随时检测扫描仪变化，更新扫描仪下拉框
        /// </summary>
        private void init_timer_auto_load_scanner()
        {
            Task.Run(() =>
            {
                while (true)
                {
                    if (!scanner_manager.refresh_scanner_list())
                    {
                        //if (scanner_manager.Scanner_List.Count > 0 && scanner_manager.Scanner_List.Count(x => x.openSourceReady) == 0)
                        {
                            this.Invoke(new Action(() =>
                            {
                                this.lblRefreshDevice_LinkClicked(null, null);
                            }));
                        }
                    }

                    Thread.Sleep(2000);
                }
            });
        }

        /// <summary>
        /// 点击【刷新设备】按钮事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void lblRefreshDevice_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            if (!config_environment.loading)
            {
                config_environment.loading = true;
                loadScannerByTwain();
                config_environment.loading = false;
            }
        }

        /// <summary>
        /// 点击【刷新设备】按钮事件，加载gif，执行刷新
        /// </summary>
        private async void loadScannerByTwain()
        {
            //updateUIOLoadingState(true);
            updateUIOLoadingState2(true);
            //await engine.load_tw_scanner_list();
            InitScannerCombobox();
            //updateUIOLoadingState(false);
            updateUIOLoadingState2(false);
        }

        /// <summary>
        /// 加载gif
        /// </summary>
        /// <param name="loading"></param>
        //private void updateUIOLoadingState(Boolean loading)
        //{
        //    if (loading)
        //    {
        //        this.loadSB.Visible = true;
        //    }
        //    else
        //    {
        //        this.loadSB.Visible = false;

        //        if (this.cmbDeviceList.Items.Count == 0)
        //        {
        //            //MsgManager.Show("没有加载到扫描仪");
        //        }
        //    }
        //}

        /// <summary>
        /// 加载gif
        /// </summary>
        /// <param name="loading"></param>
        private void updateUIOLoadingState2(bool status)
        {
            this.onCheck_status = status;
        }

        /// <summary>
        /// 初始化扫描仪下拉框
        /// </summary>
        private void InitScannerCombobox()
        {
            this.cmbDeviceList.SelectedIndexChanged -= new System.EventHandler(this.cmbDeviceList_SelectedIndexChanged);

            this.cmbDeviceList.DataSource = null;
            this.cmbDeviceList.DataSource = scanner_manager.Scanner_List;

            if (this.cmbDeviceList.Items.Count > 0)
            {
                var scanner = scanner_manager.Scanner_List.FirstOrDefault(x => x.deviceName == Settings.Default.lastScanner);

                if (scanner != null)
                {
                    this.cmbDeviceList.SelectedItem = scanner;
                }
                else
                {
                    this.cmbDeviceList.SelectedIndex = 0;
                }
            }

            this.cmbDeviceList.SelectedIndexChanged += new System.EventHandler(this.cmbDeviceList_SelectedIndexChanged);

            this.cmbDeviceList_SelectedIndexChanged(null, null);
        }

        /// <summary>
        /// 单面测试扫描，点击事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void lblTestA_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            try
            {
                //config_environment.scan_type = ScanType.Formal;
                //config_environment.web_parameter = new subCmd_startScan();
                //config_environment.web_parameter.uploadUrl = "http://localhost:3768/api/upload/pppp";
                //var entity = new Database.tb_file_info();
                //entity.fi_schema = 1;
                //entity.fi_full_name = @"d:\1.txt";
                //entity.fi_accountId = "lii";
                //config_environment.web_parameter.token = "aabbcc22 " + DateTime.Now;
                //var e_q = new upf() { entity = entity, result = new ResponseEntity<response_http_uploadImg>() { Status = 1 }, seqNumber = 0 };
                //new http_manager().Upload(e_q);
                //return;

                //biz_engine_side.active_3rd_form(this.Handle);
                //return;

                config_environment.scan_type = ScanType.Test_Panel_1_Side;
                config_environment.use_source_ui = false;
                config_environment.scan_ab = false;
                config_environment.paper_size = PaperSize.A4;

                test_scan();
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);
                MsgManager.Error("扫描出错。");
            }
        }

        /// <summary>
        /// 双面测试扫描，点击事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void lblTestAB_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            //scanner_manager.set_current(-1);
            //return;
            try
            {
                config_environment.scan_type = ScanType.Test_Panel_2_Sides;
                config_environment.use_source_ui = false;
                config_environment.scan_ab = true;
                config_environment.paper_size = PaperSize.A4;

                test_scan();
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);
                MsgManager.Error("扫描出错。");
            }
        }

        /// <summary>
        /// 测试扫描业务
        /// </summary>
        private async void test_scan()
        {
            var scanner = this.cmbDeviceList.SelectedItem as Device_Scanner;

            if (scanner != null)
            {
                scanner = scanner_manager.Scanner_List.FirstOrDefault(x => x.dsIndex == scanner.dsIndex);
            }

            if (scanner != null)
            {
                var result = await engine.Scan(scanner);

                if (result.Status != 1)
                {
                    MsgManager.Warn(result.Message);
                }
            }
            else
            {
                this.Invoke(new Action(() =>
                {
                    MsgManager.Warn("请选择扫描设备");
                }));
            }
        }

        /// <summary>
        /// 修改目录，点击事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void lblChangeDir_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            changeDataDir();
            this.toolTip1.SetToolTip(this.lblDataPath, this.lblDataPath.Text);
        }

        private void changeDataDir()
        {
            FolderBrowserDialog dialog = new FolderBrowserDialog();
            dialog.Description = "请选择扫描数据存放位置";

            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                if (string.IsNullOrEmpty(dialog.SelectedPath))
                {
                    MsgManager.Warn("存放位置不能为空");
                }
                else
                {
                    Settings.Default.dataDir = dialog.SelectedPath;
                    Settings.Default.Save();

                    showDataDir();
                }
            }
        }

        /// <summary>
        /// 显示当前剩余空间和路径展示
        /// </summary>
        private void showDataDir()
        {
            lblDataPath.Text = Settings.Default.dataDir;
            lblDiskLeft.Text = biz_disk.getDataDirLeftSpace(Settings.Default.dataDir);
        }

        /// <summary>
        /// 窗体关闭按钮点击
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void but_close_Click(object sender, EventArgs e)
        {
            this.WindowState = FormWindowState.Minimized;
            this.ShowInTaskbar = false;
        }

        /// <summary>
        /// 窗体最小化按钮点击
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void but_min_Click(object sender, EventArgs e)
        {
            this.WindowState = FormWindowState.Minimized;
        }
        Point mouseOff;
        bool leftFlag = false;

        /// <summary>
        /// 窗体移动相关
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void panel2_MouseMove(object sender, MouseEventArgs e)
        {
            if (leftFlag)
            {
                Point mouseSet = Control.MousePosition;
                mouseSet.Offset(mouseOff.X, mouseOff.Y);
                this.Location = mouseSet;
            }
        }

        /// <summary>
        /// 窗体移动相关
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void panel2_MouseUp(object sender, MouseEventArgs e)
        {
            if (leftFlag)
            {
                leftFlag = false;
            }
        }

        /// <summary>
        /// 窗体移动相关
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void panel2_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                mouseOff = new Point(-e.X, -e.Y);
                leftFlag = true;
            }
        }

        /// <summary>
        /// 窗体关闭事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain2_FormClosing(object sender, FormClosingEventArgs e)
        {
            notifyIcon1.Dispose();
            Environment.Exit(0);
        }

        /// <summary>
        /// 托盘右键 退出按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void exit_Click(object sender, EventArgs e)
        {
            string msg = string.Empty;

            if (config_environment.scan_state == true)
            {
                msg = "正在扫描中，您确定要退出吗？";
            }
            else if (!http_manager.check_is_queue_empty())
            {
                msg = "正在上传中，您确定要退出吗？";
            }
            else
            {
                msg = "您确定要退出吗？";
            }

            if (MsgManager.Ask(msg) == DialogResult.Yes)
            {
                Environment.Exit(0);
            }
        }

        /// <summary>
        /// 托盘右键 打开按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void open_Click(object sender, EventArgs e)
        {
            this.WindowState = FormWindowState.Normal;
            this.ShowInTaskbar = true;
        }

        /// <summary>
        /// 扫描仪驱动下载 按钮点击
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            System.Diagnostics.Process.Start(Properties.Settings.Default.apiUrlBase + Properties.Settings.Default.DriverDownloadUrl);
        }

        /// <summary>
        /// 扫描仪列表，切换选择事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private async void cmbDeviceList_SelectedIndexChanged(object sender, EventArgs e)
        {
            var scanner = this.cmbDeviceList.SelectedItem as Device_Scanner;

            if (scanner != null)
            {
                scanner = scanner_manager.Scanner_List.FirstOrDefault(x => x.dsIndex == scanner.dsIndex);
            }

            //updateUIOLoadingState(true);
            updateUIOLoadingState2(true);
            show_status();

            if (scanner != null)
            {
                biz_getScannerList.chosen_index = scanner.dsIndex;
            }

            var result = await engine.set_current(scanner);

            if (result.Status == 1)
            {
                Settings.Default.lastScanner = scanner.deviceName;
                Settings.Default.Save();
            }

            //updateUIOLoadingState(false);
            updateUIOLoadingState2(false);

            await FormTimer_Tick(null, null);

            //auto_connect();
            await connect_next();
        }

        /// <summary>
        /// 切换扫描仪业务
        /// </summary>
        /// <param name="scanner"></param>
        /// <returns></returns>
        private async Task<ResponseEntity> change_scanner(Device_Scanner scanner)
        {
            ResponseEntity response = new ResponseEntity() { Status = 1, Message = "ok" };

            this.Invoke(new Action(() =>
            {
                this.cmbDeviceList.SelectedIndexChanged -= new System.EventHandler(this.cmbDeviceList_SelectedIndexChanged);
                this.cmbDeviceList.SelectedValue = scanner.dsIndex;
                biz_getScannerList.chosen_index = scanner.dsIndex;
                this.cmbDeviceList.SelectedIndexChanged += new System.EventHandler(this.cmbDeviceList_SelectedIndexChanged);
                //updateUIOLoadingState(true);
                updateUIOLoadingState2(true);
            }));

            response = await engine.set_current(scanner);

            this.Invoke(new Action(async () =>
            {
                if (response.Status == 1)
                {
                    Settings.Default.lastScanner = scanner.deviceName;
                    Settings.Default.Save();
                }

                //updateUIOLoadingState(false);
                updateUIOLoadingState2(false);
                await FormTimer_Tick(null, null);
            }));

            return response;
        }

        /// <summary>
        /// 测试网速 按钮点击
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private async void lblTestNet_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            //pingTestAsync();
            this.lblNetStatus.Text = "检查中...";
            this.lblNetStatus.ForeColor = Color.Gray;
            this.pl_net.BackgroundImage = Properties.Resources.Frame_15;
            this.picStatus.Image = Properties.Resources._1;
            //await checkAnswerCardServer();
            await check_net_status();
            show_status();
        }

        /// <summary>
        /// 测试网速业务
        /// </summary>
        //private void pingTestAsync()
        //{
        //    this.Invoke(new Action(() =>
        //    {
        //        lblNetStatus.Text = "测试中";
        //        lblNetStatus.ForeColor = Color.Gray;
        //    }));

        //    ThreadStart ts = new ThreadStart(ping);
        //    Thread thread = new Thread(ts);
        //    thread.Priority = ThreadPriority.Highest;
        //    //thread.IsBackground = true; //关闭窗体继续执行
        //    thread.Start();
        //}

        /// <summary>
        /// 测试网速业务
        /// </summary>
        //private void ping()
        //{
        //    var url = Properties.Settings.Default.pingUrl;
        //    float state = biz_ping.Test(Properties.Settings.Default.pingUrl);

        //    string msg = "测试中";
        //    Color color = Color.Gray;
        //    Image img = Properties.Resources.yes;

        //    this.net_status = 1;

        //    if (state < 1)
        //    {
        //        msg = "较差";
        //        color = Color.Red;
        //        img = Properties.Resources.错_2x;
        //        this.net_status = 2;
        //    }
        //    else if (state < 2.5)
        //    {
        //        msg = "一般";
        //        color = Color.Orange;
        //    }
        //    else if (state < 5)
        //    {
        //        msg = "良好";
        //        color = Color.Black;
        //    }
        //    else if (state < 15)
        //    {
        //        msg = "畅通";
        //        color = Color.DarkGreen;
        //    }
        //    else
        //    {
        //        msg = "极佳";
        //        color = Color.Green;
        //    }

        //    this.Invoke(new Action(() =>
        //    {
        //        picNetStatus.Image = img;
        //        lblNetStatus.Text = msg;
        //        lblNetStatus.ForeColor = color;

        //        show_status();
        //    }));
        //}

        /// <summary>
        /// 测试云端 按钮点击
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private async void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            this.lblCloudStatus.ForeColor = Color.Gray;
            this.lblCloudStatus.Text = "检查中...";
            this.pl_cloud.BackgroundImage = Properties.Resources.Frame_15;
            this.picStatus.Image = Properties.Resources._1;
            await checkAnswerCardServer();
            show_status();
        }

        /// <summary>
        /// 测试网络通畅 业务
        /// </summary>
        /// <returns></returns>
        private async Task check_net_status()
        {
            var isOk = await get_net_status();

            await Task.Run(() => { Thread.Sleep(1000); });

            this.Invoke(new Action(() =>
            {
                if (isOk)
                {
                    picNetStatus.Image = Properties.Resources.对勾_1;
                    lblNetStatus.Text = "正常";
                    lblNetStatus.ForeColor = Color.Green;

                    this.net_status = 1;
                }
                else
                {
                    picNetStatus.Image = Properties.Resources.错_2x;
                    lblNetStatus.Text = "无法连接，请联系客服";
                    lblNetStatus.ForeColor = Color.Orange;

                    this.net_status = 2;
                }
            }));
        }

        /// <summary>
        /// 测试云端 业务
        /// </summary>
        /// <returns></returns>
        private async Task checkAnswerCardServer()
        {
            var isOk = await getAnswerCardServer();

            await Task.Run(() => { Thread.Sleep(1000); });

            this.Invoke(new Action(() =>
            {
                if (isOk)
                {
                    picCloudStatus.Image = Properties.Resources.对勾_1;
                    lblCloudStatus.Text = "正常";
                    lblCloudStatus.ForeColor = Color.Green;

                    //picNetStatus.Image = Properties.Resources.对勾_1;
                    //lblNetStatus.Text = "正常";
                    //lblNetStatus.ForeColor = Color.Green;

                    this.cloud_status = 1;
                    //this.net_status = 1;
                }
                else
                {
                    picCloudStatus.Image = Properties.Resources.错_2x;
                    lblCloudStatus.Text = "无法连接，请联系客服";
                    lblCloudStatus.ForeColor = Color.Orange;

                    //picNetStatus.Image = Properties.Resources.错_2x;
                    //lblNetStatus.Text = "无法连接，请联系客服";
                    //lblNetStatus.ForeColor = Color.Orange;

                    this.cloud_status = 2;
                    //this.net_status = 2;
                }
            }));
        }

        /// <summary>
        /// 测试云端 业务
        /// </summary>
        /// <returns></returns>
        private async Task<bool> getAnswerCardServer()
        {
            Boolean isOk = false;

            try
            {
                ServicePointManager.SecurityProtocol =
              SecurityProtocolType.Ssl3 |
              SecurityProtocolType.Tls |
              SecurityProtocolType.Tls11 |
              SecurityProtocolType.Tls12;

                HttpClient httpClient = new HttpClient();

                //String url = Properties.Settings.Default.apiUrlBase + Properties.Settings.Default.answerCardUrl;
                //String url = Properties.Settings.Default.answerCardUrl;
                //url = "https://dev3.k12100.net/teaching/api/v1/scanned_student/available";
                //Dictionary<String, String> data = new Dictionary<string, string>();
                //data.Add("test", "1");
                //FormUrlEncodedContent content = new FormUrlEncodedContent(data);
                //HttpResponseMessage response = await httpClient.PostAsync(url, content);

                string url = ConfigManager.GetConfig("answerCardUrl");
                HttpResponseMessage response = await httpClient.GetAsync(url);
                response.EnsureSuccessStatusCode();

                String result = await response.Content.ReadAsStringAsync();

                JObject jsonData = (JObject)JsonConvert.DeserializeObject(result);
                int code = Int32.Parse(jsonData["code"].ToString());

                if (code == 200 || code == 500 || code == 401)
                {
                    string dataStr = jsonData["data"].ToString();
                    //云端状态ok
                    isOk = true;
                }
                else
                {
                    Console.WriteLine(DateTime.Now.ToString() + jsonData["msg"].ToString());
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(DateTime.Now.ToString() + e);
            }

            return isOk;
        }

        private async Task<bool> get_net_status()
        {
            Boolean isOk = false;

            try
            {
                var url = "https://www.baidu.com";
                HttpClient client = new HttpClient();
                client.Timeout = TimeSpan.FromSeconds(2);
                var response = await client.GetAsync(url);
                response.EnsureSuccessStatusCode();

                isOk = true;
            }
            catch (Exception ee)
            {
                isOk = false;
                LogManager.WriteLog(ee);
            }

            return isOk;
        }

        /// <summary>
        /// 开机自启动
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            RegisterHelper.AutoStart(checkBox1.Checked);
        }

        /// <summary>
        /// 当http上传图片失败业务
        /// </summary>
        private void on_net_broken()
        {
            config_environment.scan_state = false;
            to_check_net = true;
        }

        /// <summary>
        /// http上传结果通知
        /// </summary>
        private void on_http_notify(upf result)
        {
            try
            {
                result.entity = null;
                var txt = JsonConvert.SerializeObject(result.result.Data);

                biz_socketServer.Send(txt);
            }
            catch (Exception ee)
            {

            }
        }

        /// <summary>
        /// http上传结果通知2
        /// </summary>
        private void on_http_notify2(string result)
        {
            try
            {
                biz_socketServer.Send(result);
            }
            catch (Exception ee)
            {

            }
        }

        /// <summary>
        /// 扫描开始通知
        /// </summary>
        private void on_startScan(string url)
        {
            try
            {
                Uri uri = new Uri(url);

                Properties.Settings.Default.answerCardUrl = url;
                Properties.Settings.Default.pingUrl = uri.Host;

                Properties.Settings.Default.Save();
            }
            catch (Exception ee)
            {

            }
        }

        private bool first_change = true;

        /// <summary>
        /// 自动连接列表中下一台机器，在加入对usb的判断后，本方法已无意义
        /// </summary>
        /// <returns></returns>
        private async Task connect_next()
        {
            await Task.Run(() =>
            {
                Thread.Sleep(1000);
            });

            if (!first_change)
            {
                return;
            }

            try
            {
                if (scanner_manager.Scanner_List.Count > 0)
                {
                    var count = scanner_manager.Scanner_List.Count(x => x.openSourceReady == true);

                    if (count == 0)
                    {
                        this.Invoke(new Action(() =>
                        {
                            var index = this.cmbDeviceList.SelectedIndex;

                            if (index + 1 >= scanner_manager.Scanner_List.Count)
                            {
                                first_change = false;
                                return;
                                index = 0;
                            }
                            else
                            {
                                index++;
                            }

                            this.cmbDeviceList.SelectedIndex = index;
                        }));
                    }
                }
            }
            catch (Exception ee)
            {

            }
        }

        bool first_active = true;
        /// <summary>
        /// 若第一次运行时发现没有设置目录，则弹出目录设置
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain2_Activated(object sender, EventArgs e)
        {
            if (first_active)
            {
                first_active = false;

                if (string.IsNullOrEmpty(Settings.Default.dataDir))
                {
                    lblChangeDir_LinkClicked(null, null);
                }

                this.TopMost = true;
                this.TopMost = false;
            }
        }

        /// <summary>
        /// 版本检查
        /// </summary>
        private async void check_version()
        {
            //检查上次升级情况
            var result = biz_version.read_updateInfo();
            var version = ConfigManager.GetConfig("appVersion");

            this.lblVersion.Text = "慧教研客户端 V" + version;

            //版本检测
            var entity = await biz_version.check();

            //有升级进入升级流程，否则进入普通流程
            if (entity != null && entity.code == 200 && entity.data.statusCode != 0 && entity.data.url.Length > 0)
            {
                //为1弹选择升级框，否则弹强制升级框
                if (entity.data.statusCode == 1)
                {
                    biz_mask.show_ask(this, entity);
                }
                else
                {
                    biz_mask.show_force(this, entity);
                }
            }
            else
            {
                //删除升级信息
                var path = System.Windows.Forms.Application.StartupPath + @"\updateTemp";

                if (Directory.Exists(path))
                {
                    Directory.Delete(path, true);
                }

                if (result)
                {
                    MsgManager.Show("已成功升级到 v" + version);
                }
            }
        }

        /// <summary>
        /// 初始化升级所需参数
        /// </summary>
        private void init_environment()
        {
            //config_environment.environment = Custom_Environment.Test;

            var environment = ConfigManager.GetConfig("environment");

            if (environment == "1")
            {
                config_environment.url_base = ConfigManager.GetConfig("url_upgrade_formal");
            }
            else
            {
                config_environment.url_base = ConfigManager.GetConfig("url_upgrade_test");
            }
        }

        /// <summary>
        /// 托盘 鼠标双击
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {         
            this.WindowState = FormWindowState.Normal;
            this.ShowInTaskbar = true;
            this.TopMost = true;
            this.TopMost = false;
        }

        private void notifyIcon1_MouseClick(object sender, MouseEventArgs e)
        {
            notifyIcon1_MouseDoubleClick(null, null);
        }
    }
}