类型转化&WCF不同binding的区别

需要使用队列时并且涉及多线程时使用ConcurrentQueue

这个性内比自己使用Queue并且配合lock要好很多

 

 

calcFactory = new ChannelFactory<ICalcService>(new BasicHttpBinding(BasicHttpSecurityMode.None), address);

//tcp模式
calcFactory = new ChannelFactory<ICalcService>(new NetTcpBinding(SecurityMode.None), address);

calcService = calcFactory.CreateChannel();

Stopwatch sw = new Stopwatch();
sw.Start();
for (int i = 0; i < 10; i++)
{
try
{

calcService.Add(3, 4);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
var cObj = calcService as ICommunicationObject;
if (cObj.State == CommunicationState.Faulted
|| cObj.State == CommunicationState.Closed
|| cObj.State == CommunicationState.Closing

)
{
Console.WriteLine("status:closed,closing,faulted");
}
break;
}
}
sw.Stop();
Console.WriteLine(sw.ElapsedMilliseconds);

 

tpc模式:

是如果遇到一次错误，那么会将cObj的状态改变，并且cObj对象不能再次使用

Console.WriteLine("status:closed,closing,faulted");有输出

 

BasicHttpBinding 无会话模式:

遇到错误后不会执行到Console.WriteLine("status:closed,closing,faulted");有输出

cObj对象可以重复使用

 

参考:http://www.cnblogs.com/artech/archive/2009/07/04/1516908.html

 

//=========类型转化==================

TypeConverter conv = TypeDescriptor.GetConverter(typeof(DateTime?));
var what = conv.ConvertFrom("");// what ==null
var whatType= what.GetType(); //这一行会报错，

 

编辑窗口代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using com.geelyhd.MFG.EFModel;

namespace EMControlServer.UI
{
    public partial class frmStatusEdit : Form
    {
        private EMStatusInfo MStatus;
        public List<PropertyNameValue> ModifyProperties = new List<PropertyNameValue>();
        public frmStatusEdit()
        {
            InitializeComponent();
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.StartPosition = FormStartPosition.CenterParent;

        }

        public frmStatusEdit(EMStatusInfo it):this()
        {
            this.MStatus = it;
        }

        private void frmStatusEdit_Load(object sender, EventArgs e)
        {
            IntiList();
        }

        private void IntiList()
        {
            checkedListBox1.CheckOnClick = true;
            var type= MStatus.GetType();
            foreach (var p in type.GetProperties())
            {
                if (!p.CanWrite) continue;
                var item = "[" +p.Name +"]" + ":" + p.GetValue(MStatus, null);
                checkedListBox1.Items.Add(item);
            }
            checkedListBox1.ItemCheck += (s, e) => 
            {
                var item = checkedListBox1.Items[e.Index];
                if (item == null) return;
                var itemStr=item.ToString().Trim();
                var lines = textBox1.Lines;
                var index= itemStr.IndexOf(":");
                var propertyName=itemStr.Substring(0,index);
                if (e.NewValue == CheckState.Checked)
                {
                    var findFlag = false;
                    foreach (var line in lines)
                    {
                        if (line.StartsWith(propertyName + ":"))
                        {
                            findFlag = true;
                            break;
                        }
                    }
                    if (!findFlag)
                    {
                        textBox1.Text += itemStr+Environment.NewLine;
                    }
                }
                else if (e.NewValue == CheckState.Unchecked)
                {
                    var findline="";
                    foreach (var line in lines)
                    {
                        if (line.StartsWith(propertyName + ":"))
                        {
                            findline=line;
                            break;
                        }
                    }
                    if (!string.IsNullOrWhiteSpace(findline))
                    {
                        textBox1.Text = textBox1.Text.Replace(findline+Environment.NewLine, "");
                    }

                }
            };
        }

        private void btnSubmit_Click(object sender, EventArgs e)
        {
            try
            {
                foreach (var line in textBox1.Lines)
                {
                    var item = line.Trim();
                    var arr= item.Split(":".ToArray(), StringSplitOptions.RemoveEmptyEntries);
                    if (arr.Length >= 1)
                    {
                        var nameValue=new PropertyNameValue();
                        nameValue.Name= arr[0].Replace("[", "").Replace("]", "");
                        if (arr.Length >= 2)
                        {
                            nameValue.Value = arr[1].Trim();
                        }
                        else
                        {
                            nameValue.Value = "";
                        }
                        ModifyProperties.Add(nameValue);
                    }
                }
                if (ModifyProperties.Count <= 0)
                {
                    throw new Exception("未提供任何变更!");
                }
                this.DialogResult = System.Windows.Forms.DialogResult.OK;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
        }
    }
}

WCF实现代码

        public int SetProperty(List<PropertyNameValue> properties,string position)
        {
            var memoryStatus = EMControlServer.Instance.GetStatus(position);
            SetProperty(properties, memoryStatus);
            return 0;
        }
        public int Persistence(string position)
        {
            var memoryStatus = EMControlServer.Instance.GetStatus(position);
            using (var ctx = DBCtx.GetZDCtlCtx())
            {
                var dbStatus = ctx.EMStatus.FirstOrDefault(ent => ent.Position == position);
                if (dbStatus == null) throw new Exception("未发现指定机台!");
                dbStatus.Amount = memoryStatus.Amount;
                dbStatus.BCounterNum = memoryStatus.BCounterNum;
                dbStatus.DetectionRequest = memoryStatus.DetectionRequest;
                dbStatus.EmpNo = memoryStatus.EmpNo;
                dbStatus.HasDetection = memoryStatus.HasDetection;
                dbStatus.IsCompleted = memoryStatus.IsCompleted;
                dbStatus.StartTime = memoryStatus.StartTime;
                dbStatus.TaskId = memoryStatus.TaskId;
                dbStatus.TaskType = memoryStatus.TaskType;
                ctx.SaveChanges();
            }
            return 0;
        }
        public int Free(EMStatusInfo status)
        {
            var memoryStatus = EMControlServer.Instance.GetStatus(status.Position);
            if (memoryStatus.LockValue != 1)
            {
                throw new Exception("设备并未锁定");
            }
            EMControlServer.Instance.DoUnlockAction(status.Position);
            return 0;
        }

        public int Ping()
        {
            return DateTime.Now.Millisecond;
        }

        #region help method
        private void SetProperty(List<PropertyNameValue> properties, EMStatusInfo memoryStatus)
        {

            var type = memoryStatus.GetType();
            foreach (var pp in properties)
            {
                var p = type.GetProperty(pp.Name);
                if (!p.CanWrite)
                {
                    continue;
                }
                p.SetValue(memoryStatus, TryParser(pp.Value, p.PropertyType, null), null);
            }
           
        }
        private static Object TryParser(string v, Type type, object dValue)
        {
            if (string.IsNullOrEmpty(v))
            {
                return dValue;
            }
            else
            {
                if (type.Equals(typeof(String))) return v;
                var t = Activator.CreateInstance(type);

                try
                {
                    if (t == null)//可空类型
                    {


                        TypeConverter conv = TypeDescriptor.GetConverter(type);
                        t = conv.ConvertFrom(v);
                    }
                    else
                    {

                        t = Convert.ChangeType(v, type);
                    }
                }
                catch
                {

                    t = dValue;
                }
                return t;
            }
        }
        #endregion

主控窗体实现代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using F.Studio.Infrastructure;
using com.geelyhd.MFG.EFModel;
using com.geelyhd.MFG.IService;
using EMControlServer.IService;
using System.ServiceModel;
using System.Configuration;
using F.Studio.Common.Cfg;
using System.Threading;
using System.Diagnostics;
using System.IO;
namespace EMControlServer.UI
{
    public partial class frmMain : Form
    {



        private OPCAutoMgr OPCManager = new OPCAutoMgr();
        private List<EMStatusInfo> MemoryStatus = null;
        private System.Windows.Forms.ListView listView1;
        
        public frmMain()
        {
            InitializeComponent();
            btnServerSwitch.Text = "启动服务";
            InitListView();
            #region 模拟数据
            //MockConfig();

            #endregion

            EMControlServer.Instance.SetIOFunc = OPCManager.WriteIO;
        }

        private void InitListView()
        {
            #region 设置属性
            listView1 = new ListViewNF();
            this.listView1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.listView1.Location = new System.Drawing.Point(0, 0);
            this.listView1.Name = "listView1";
            this.listView1.Size = new System.Drawing.Size(954, 296);
            this.listView1.TabIndex = 0;
            this.listView1.UseCompatibleStateImageBehavior = false;
            this.listView1.View = System.Windows.Forms.View.Details;
            this.listView1.MultiSelect = false;
            this.listView1.MouseDoubleClick += (s, e) => 
            {
                ActionDetail();
            };
            this.listView1.MouseClick += (s, e) =>
            {
                if (this.listView1.SelectedItems.Count <= 0) return;
                var position = this.listView1.SelectedItems[0].Text;
                if (e.Button == System.Windows.Forms.MouseButtons.Right)
                {
                    contextMenuStrip1.Show(listView1,e.Location);
                }
            };
            panel2.Controls.Add(listView1);
            #endregion
            listView1.View = View.Details;
            listView1.FullRowSelect = true;
            listView1.GridLines = true;
            listView1.BeginUpdate();
            //创建头部
            foreach (var item in new String[] { "机台$100", "员工$100", "任务号$100","主状态$80", "状态$150", "读数$100", "锁定$60", "更新时间$180", "开始读数$80", "批次计数$80","任务量$80","完工$60","需要检测$80","已检$60" })
            {
                var arr = item.Split("$".ToArray(), StringSplitOptions.RemoveEmptyEntries);
                var hc = new ColumnHeader();
                hc.Width = int.Parse(arr[1]);
                hc.Text = arr[0];
                listView1.Columns.Add(hc);
            }
            for (int i = 1; i <= 150; i++)
            {
                var name = "00" + i;
                var position = "ZD" + name.Substring(name.Length - 3);
                var lvItem = listView1.Items.Add(position);
                lvItem.SubItems.AddRange(
                 new string[] {
                              "-","-","-",
                              "-","-",
                            "-","-","-","-","-","-","-","-" });
            }
            listView1.EndUpdate();
        }

      
        protected override void OnClosed(EventArgs e)
        {
            EMCServiceHost.Instance.Stop();
            EMControlServer.Instance.Stop();
            OPCManager.Stop();
            base.OnClosed(e);
        }
        private bool CanCloseFlag=false;
        protected override void OnClosing(CancelEventArgs e)
        {
            if (!CanCloseFlag)
            {
                e.Cancel = true;
                MessageBox.Show("不允许直接关闭系统!","警告",MessageBoxButtons.OK,MessageBoxIcon.Warning);
            }
            base.OnClosing(e);
        }



        private void menuExit_Click(object sender, EventArgs e)
        {
            CanCloseFlag = true;
            this.Close();
            Application.Exit();
        }

        private void btnServerSwitch_Click(object sender, EventArgs e)
        {
            try
            {
                if (btnServerSwitch.Text == "启动服务")
                {
                    EMCServiceHost.Instance.Start();
                    EMControlServer.Instance.Start();
                    OPCManager.Start();
                    var initReads= OPCManager.ReadManual();
                    EMControlServer.Instance.SetInitValue(initReads);
                    timerRefresh.Enabled = true;
                    MemoryStatus = null;
                    btnServerSwitch.Text = "停止服务";
                    tips.Text = "服务启动:" + DateTime.Now;

                    IsRunning = true;

                }
                else
                {
                    EMCServiceHost.Instance.Stop();
                    EMControlServer.Instance.Stop();
                    OPCManager.Stop();
                    btnServerSwitch.Text = "启动服务";
                    timerRefresh.Enabled = false;
                    tips.Text = "服务关闭";
                    IsRunning = false;
                    //var counter = countArr.Aggregate("", (s, v) => { return s += v + ","; }).TrimEnd(",".ToCharArray());
                    //File.WriteAllText(@"C:\c.txt", counter);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                try
                {
                    btnServerSwitch.Text = "启动服务";
                    EMCServiceHost.Instance.Stop();
                    EMControlServer.Instance.Stop();
                    timerRefresh.Enabled = false;
                    IsRunning = false;
                }
                catch { }
            }
        }
        private Dictionary<String, RefreshItemInfo> ItemRefreshTime = new Dictionary<string, RefreshItemInfo>();
        private void timerRefresh_Tick(object sender, EventArgs e)
        {
            if (!ckbAutoRefresh.Checked) return;

            listView1.BeginUpdate();
            try
            {
                timerRefresh.Enabled = false;

                if (MemoryStatus == null)
                {
                    MemoryStatus = EMControlServer.Instance.GetStatus();
                }

                var c = 0;
                foreach (var sItem in MemoryStatus)
                {
                    //"机台","员工","任务号","状态","读数","锁定" ,"更新时间"
                    #region 刷新状态
                    var needFresh = false;
                    if (!ItemRefreshTime.ContainsKey(sItem.Position))
                    {
                        ItemRefreshTime[sItem.Position] = new RefreshItemInfo() { LastChangeTime = sItem.ValueChangeTime.Value, ParentStatus = sItem.ParentStatus };
                        needFresh = true;

                    }
                    if (sItem.ValueChangeTime.Value != ItemRefreshTime[sItem.Position].LastChangeTime 
                        ||
                        sItem.ParentStatus!=ItemRefreshTime[sItem.Position].ParentStatus
                        )
                    {
                        ItemRefreshTime[sItem.Position].LastChangeTime = sItem.ValueChangeTime.Value;
                        ItemRefreshTime[sItem.Position].ParentStatus = sItem.ParentStatus;
                        needFresh = true;
                    }
      
                    if (needFresh)
                    {

                        #region 逐条更新
                        var lvItem = listView1.FindItemWithText(sItem.Position);
                        lvItem.SubItems[1].Text = sItem.EmpNo;
                        lvItem.SubItems[2].Text = sItem.TaskId.ToString();
                        lvItem.SubItems[3].Text = sItem.ParentStatus;
                        lvItem.SubItems[4].Text = sItem.Status;
                        lvItem.SubItems[5].Text = sItem.CounterValue.ToString();
                        lvItem.SubItems[6].Text = sItem.LockValue.ToString();
                        lvItem.SubItems[7].Text = sItem.ValueChangeTime.ToString();
                        lvItem.SubItems[8].Text = sItem.BCounterNum.ToString();
                        lvItem.SubItems[9].Text = sItem.ProduceNum.ToString();
                        lvItem.SubItems[10].Text = sItem.Amount.ToString();
                        lvItem.SubItems[11].Text = sItem.IsCompleted.ToString();
                        lvItem.SubItems[12].Text = sItem.DetectionRequest.ToString();
                        lvItem.SubItems[13].Text = sItem.HasDetection.ToString();

                        #endregion
                        c++;
                    }
                    #endregion
                }
                Console.WriteLine("变动数:" + c);

            }
            catch { }
            finally
            {
                timerRefresh.Enabled = true;
            }
            listView1.EndUpdate();


        }

        private void frmMain_Load(object sender, EventArgs e)
        {
            //InitVariates();
        }

        #region Helper
        private void CreatePositionFile()
        {
            var list = new List<PositionInfo>();
            for (int i = 1; i <= 150; i++)
            {
                var name = "00" + i;
                var position = "ZD" + name.Substring(name.Length - 3, 3);
                list.Add(new PositionInfo() { Name = "自动机", Position = position });
            }
            XmlDataCfgMgr<List<PositionInfo>>.SaveV(list);
        }
        private static void InitWhiteList()
        {
            using (var ctx = DBCtx.GetZDCtlCtx())
            {
                for (int i = 1; i <= 150; i++)
                {
                    var name = "00" + i;
                    name = name.Substring(name.Length - 3);
                    var wEnt = new EMWhiteList();
                    wEnt.AddTime = DateTime.Now;
                    wEnt.Position = "ZD" + name;
                    ctx.EMWhiteList.AddObject(wEnt);

                }
                ctx.SaveChanges();
            }
        }
        private static void InitVariates()
        {
            var list = new List<VariateGroupInfo>();
           
            var group = new VariateGroupInfo();
            group.Name = "测试组";
            list.Add(group);
            int clientId = 1;
            for (int i = 1; i <= 150; i++)
            {
                var position = "00" + i;
                var no = position.Substring(position.Length - 3);
                var pathCounter = "S71200.Control1.00" + no;
                var pathLock = "S71200.Control1.01" + no;
                
                position = "ZD" +no;
                group.Variates.Add(new VariateInfo() { Name = "计数器", Path =pathCounter, Position = position, ClientId = clientId });
                group.Variates.Add(new VariateInfo() { Name = "锁定位", Path = pathLock, Position = position, ClientId = clientId+1 });
                clientId += 2; 
            }
            XmlDataCfgMgr< List<VariateGroupInfo>>.SaveV(list);
        }
        #endregion
        #region Mock
        private int[] countArr = new int[151];
        private Boolean[] lockArr = new Boolean[151];
        private Boolean IsRunning = false;
        private void MockConfig()
        {
            var rand = new Random(DateTime.Now.Second);
            if (File.Exists(@"C:\c.txt"))
            {
                var nums = File.ReadAllText(@"C:\c.txt");
                var numArr = nums.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                var j = 0;
                foreach (var num in numArr)
                {
                    countArr[j] = int.Parse(num);
                    j++;
                }
            }
            ThreadPool.QueueUserWorkItem((o) =>
            {
                while (true)
                {
                    Stopwatch sw = new Stopwatch();
                    sw.Start();
                    #region
                    if (!IsRunning)
                    {
                        Thread.Sleep(500);
                        continue;
                    }
                    var list = new List<ChangedItem>();

                    for (int i = 1; i <= 150; i++)
                    {
                        if (lockArr[i]) continue;

                        var name = "00" + i;
                        var position = "ZD" + name.Substring(name.Length - 3, 3);
                        var inNum = rand.Next(6);
                        if (inNum >= 3) continue;
                        countArr[i] += inNum;
                        if (countArr[i] >= 30000) countArr[i] = 0;
                        list.Add(new ChangedItem() { Name = ChangedItem.Name_Counter, Position = position, Value = countArr[i] });

                    }

                    EMControlServer.Instance.HandleItemChanged(list);
                    Thread.Sleep(500);
                    #endregion
                    sw.Stop();
                    // Console.WriteLine(sw.ElapsedMilliseconds);
                }
            }, null);
        }
        #endregion

        private void menuUpdate_Click(object sender, EventArgs e)
        {

            ActionUpdate();
        }

       

        private void btnRefresh_Click(object sender, EventArgs e)
        {
            ItemRefreshTime.Clear();
        }

        private void menu_View_Click(object sender, EventArgs e)
        {
            ActionDetail();
        }

        private void menu_Edit_Click(object sender, EventArgs e)
        {
            ActionUpdate();
        }
        private void ActionUpdate()
        {
            if (this.listView1.SelectedItems.Count <= 0) return;
            var position = this.listView1.SelectedItems[0].Text;

            if (MemoryStatus != null)
            {
                var it = MemoryStatus.FirstOrDefault(ent => ent.Position == position);
                if (it != null)
                {
                    using (var frm = new frmStatusEdit(it))
                    {
                        if (frm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                        {
                            try
                            {
                                var list = frm.ModifyProperties;
                                var tip = "";
                                EMCServerWrapper.Instance.Server.SetProperty(list, position);
                                tip = "内存状态变更成功";
                                if (frm.ckbPersistence.Checked)
                                {
                                    EMCServerWrapper.Instance.Server.Persistence(position);
                                    tip += ",持久化到数据库成功";
                                }
                                MessageBox.Show(tip + "!");
                            }
                            catch (Exception ex)
                            {
                                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            }
                        }
                    }
                }
            }
        }
        private void ActionDetail()
        {
            if (this.listView1.SelectedItems.Count <= 0) return;
            var position = this.listView1.SelectedItems[0].Text;
            if (MemoryStatus != null)
            {
                var it = MemoryStatus.FirstOrDefault(ent => ent.Position == position);
                if (it != null)
                {
                    using (var frm = new frmStatusDetail(it))
                    {
                        frm.ShowDialog();
                    }
                }
            }
        }
    }

    public class EMCServerWrapper
    {
        private static readonly EMCServerWrapper _Instance = new EMCServerWrapper();
        public static EMCServerWrapper Instance
        {
            get
            {
                return _Instance;
            }


        }

        private IEMCService _proxy;
        public IEMCService Server
        {
            get
            {
                if (_proxy == null)
                {
                    TryOpenChannel();

                }
                else
                {
                    var cObj = _proxy as ICommunicationObject;
                    if (cObj.State == CommunicationState.Faulted
                        || cObj.State == CommunicationState.Closed
                        || cObj.State == CommunicationState.Closing

                        )
                    {
                        TryOpenChannel();
                    }
                }
                return _proxy;
            }

        }
        private void TryOpenChannel()
        {
            try
            {
                _proxy = WCFHelper.Factory.CreateChannel();
                (_proxy as ICommunicationObject).Open();
            }
            catch (Exception)
            {
                _proxy = null;
                throw;
            }
        }

        private class WCFHelper
        {

            private static ChannelFactory<IEMCService> _channelFac;

            public static ChannelFactory<IEMCService> Factory
            {
                get
                {
                    if (_channelFac == null)
                    {
                        _channelFac =
                            new ChannelFactory<IEMCService>(new NetTcpBinding(SecurityMode.None),
                            EndpointStr);

                    }
                    return _channelFac;
                }
            }

            private static string EndpointStr
            {
                get
                {
                    return ConfigurationManager.AppSettings["EMCServiceURL"];

                }
            }


        }
    }
    public class RefreshItemInfo
    {
        public String ParentStatus { get; set; }
        public DateTime LastChangeTime { get; set; }
    }

}

 无刷新ListView

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace com.geelyhd.MFG.UI
{
    class ListViewNF : System.Windows.Forms.ListView
    {
        public ListViewNF()
        {
            // 开启双缓冲
            this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);

            // Enable the OnNotifyMessage event so we get a chance to filter out 
            // Windows messages before they get to the form's WndProc
            this.SetStyle(ControlStyles.EnableNotifyMessage, true);
        }

        protected override void OnNotifyMessage(Message m)
        {
            //Filter out the WM_ERASEBKGND message
            if (m.Msg != 0x14)
            {
                base.OnNotifyMessage(m);
            }
        }
    }
}

采用链接池管理net.tcp链接

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using EMControlServer.IService;
using System.Configuration;
using com.geelyhd.MFG.EFModel;
using System.Collections.Concurrent;
using System.Timers;

namespace com.geelyhd.MFG.Service
{


    public class EMCServerWrapper : IDisposable
    {
        private static readonly EMCServerWrapper _Instance = new EMCServerWrapper();
        public static EMCServerWrapper Instance
        {
            get
            {
                return _Instance;
            }


        }
        private Timer HBTimer = new Timer(1000 * 60 * 2);
        private volatile bool Enabled = true;
        private ConcurrentDictionary<int, IEMCService> ProxyDic = new ConcurrentDictionary<int, IEMCService>();

        private EMCServerWrapper()
        {
            #region 心跳检测
            HBTimer.AutoReset = false;
            HBTimer.Elapsed += (s, e) =>
            {
                try
                {
                    var list = ProxyDic.Select(ent => new { ent.Key, ent.Value }).ToList();
                    foreach (var item in list)
                    {
                        try
                        {
                         
                            item.Value.Ping();
                        }
                        catch
                        {
                            IEMCService outIt = null;
                            ProxyDic.TryRemove(item.Key, out outIt);
                            try
                            {
                                (outIt as ICommunicationObject).Close();
                            }
                            catch { }
                        }
                    }
                }
                catch { }
                finally
                {
                    if (Enabled) HBTimer.Start();
                }
            };
            HBTimer.Start();
            #endregion
        }
        public IEMCService Server
        {
            get
            {

                var key = DateTime.Now.Millisecond % 5;
                IEMCService _proxy = null;
                ProxyDic.TryGetValue(key, out _proxy);

                lock (this)
                {
                    if (_proxy == null)
                    {
                        TryOpenChannel(ref _proxy);
                        try
                        {
                            ProxyDic[key] = _proxy;
                        }
                        catch { }

                    }
                    else
                    {
                        var cObj = _proxy as ICommunicationObject;
                        if (cObj.State == CommunicationState.Faulted
                            || cObj.State == CommunicationState.Closed
                            || cObj.State == CommunicationState.Closing

                            )
                        {
                            TryOpenChannel(ref _proxy);
                            try
                            {
                                ProxyDic[key] = _proxy;
                            }
                            catch { }
                        }
                    }
                }
                return _proxy;



            }

        }
        private void TryOpenChannel(ref IEMCService _proxy)
        {
            try
            {
                _proxy = WCFHelper.Factory.CreateChannel();
                (_proxy as ICommunicationObject).Open();
            }
            catch (Exception)
            {
                _proxy = null;
                throw;
            }
        }

        private class WCFHelper
        {

            private static ChannelFactory<IEMCService> _channelFac;

            public static ChannelFactory<IEMCService> Factory
            {
                get
                {
                    if (_channelFac == null)
                    {
                        _channelFac =
                            new ChannelFactory<IEMCService>(new NetTcpBinding(SecurityMode.None),
                            EndpointStr);

                    }
                    return _channelFac;
                }
            }

            private static string EndpointStr
            {
                get
                {
                    return ConfigurationManager.AppSettings["EMCServiceURL"];

                }
            }


        }
        private void Stop()
        {
            Enabled = false;
            try { HBTimer.Dispose(); }
            catch { }
            try
            {
                var list = ProxyDic.Select(ent => ent.Value).ToList();
                foreach (var item in list)
                {
                    try
                    {
                        (item as ICommunicationObject).Close();
                    }
                    catch { }
                }
            }
            catch { }
        }
        #region IDisposable Members
        private bool disposed = false;
        /// <summary>
        /// Performs application-defined tasks associated with freeing, 
        /// releasing, or resetting unmanaged resources.
        /// </summary>
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        /// <summary>
        /// Releases unmanaged and - optionally - managed resources
        /// </summary>
        /// <param name="disposing"><c>true</c> to release both managed 
        /// and unmanaged resources; <c>false</c> 
        /// to release only unmanaged resources.
        /// </param>
        protected virtual void Dispose(bool disposing)
        {
            if (!this.disposed)
            {
                if (disposing)
                {
                    try
                    {
                        Stop();
                    }
                    catch
                    {

                    }
                }

                disposed = true;
            }
        }


        #endregion
    }

}