c# 子线程与主线程通信二

之前写过使用线程上下文实现线程同步，今天利用子线程向主线程发送事件，实现子线程与主线程的同步

基本步骤

1、定义类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DX_equip.Class

{

/// <summary>

/// 定义一个信息委托

/// </summary>

/// <param name="sender">发布者</param>

/// <param name="msg">发送内容</param>

public delegate void DxMsgDlg(object sender,object msg);

public class DxMessageHelper

{

/// <summary>

/// 消息发送事件

/// </summary>

public static event DxMsgDlg EventSend;

public static void DxSendMessage(object sender, object msg)

{

if (EventSend != null)//

{

EventSend(sender, msg);

}

}

}

}

2、在子线程中发送事件，实现事件通知功能

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading;

using System.Diagnostics;

using System.Xml;

using System.Data;

using System.Windows.Forms;

namespace DX_equip.Class

{

public class WebServiceConnect

{

private static bool circle = false;

private static Thread taskThread;

public static string getTaskMsg = "";

public static int connCount = 0;

private static SynchronizationContext mainThreadSynContext;

public static void GetTaskInfo(string taskInfoIn0)

{

mainThreadSynContext = SynchronizationContext.Current;

taskThread = new Thread(new ParameterizedThreadStart(webConnect));

taskThread.Start(taskInfoIn0);

}

public static void webConnect(object taskInfoIn)

{

getTaskMsg = "";

try

{

string taskInfoIn0 = taskInfoIn.ToString();

TestWebReference.TDMTestTaskInterfaceServiceService taskInfoService = new TestWebReference.TDMTestTaskInterfaceServiceService();

string taskName = SystemInfoClass.systemBaseInfo.taskName;

getTaskMsg = taskInfoService.queryTaskInfo(taskInfoIn0, taskName);

StackTrace st = new StackTrace();

string callName = st.GetFrame(1).GetMethod().Name;

DxMessageHelper.DxSendMessage(callName,getTaskMsg);

}

catch (Exception ex)

{

System.Net.WebException wex = ex as System.Net.WebException;

System.Windows.Forms.MessageBox.Show("通ª¡§讯?未¡ä连¢?接¨®！ê?");

}

}

3、接收事件函数中注册事件

public MainForm()

{

InitializeComponent();

DxMessageHelper.EventSend += new DxMsgDlg(Receive_DxEventSend);

}

private void Receive_DxEventSend(object sender, object msg)

{

this.Invoke(new Action(() =>

{

labTaskMsg.Visible = true;

labTaskMsg.Text = msg.ToString();

}));

Trace.WriteLine("***Info*** " + msg.ToString());

}