从子线程向主线程返回数据出错，高手来，急！

[starj1]

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Test
{
delegate void SetMatchCollectionCallback(System.Text.RegularExpressions.MatchCollection mcT);
public delegate void JobCompleteHandle(System.Text.RegularExpressions.MatchCollection e);
public delegate void BusyStatusChangedHandle(bool e);


public partial class frmMain : Form
{
BGWorker bgwT;

public frmMain()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
dlgOpenFile.ShowDialog();
}

private void dlgOpenFile_FileOk(object sender, CancelEventArgs e)
{
string sT = string.Empty;
using (System.IO.StreamReader srT = new System.IO.StreamReader(dlgOpenFile.FileName, Encoding.Default))
{
sT = srT.ReadToEnd();
}
bgwT = new BGWorker(ref sT, textBox1.Text, System.Text.RegularExpressions.RegexOptions.Multiline);
bgwT.JobComplete += new JobCompleteHandle(bgwT_JobComplete);
bgwT.StartJob();
}

void bgwT_JobComplete(System.Text.RegularExpressions.MatchCollection e)
{
for (Int32 I = 0; I < e.Count; I++)
{
textBox2.AppendText(e[I].Value);//线程间操作无效: 从不是创建控件“textBox2”的线程访问它。
}
}
}

public class BGWorker:System.Windows.Forms.Form//这行不管BGWorker是Form还是Control，结果一样出错。。。
{
public event JobCompleteHandle JobComplete;
private event JobCompleteHandle JobCompletePretreat;

string sToTreat;
string sRegularString;
System.Text.RegularExpressions.RegexOptions roOption;
Control ctrT;

System.Threading.Thread thrT;

public BGWorker(ref string sToTreat, string sRegularString, System.Text.RegularExpressions.RegexOptions roOption)
{
this.sToTreat = sToTreat;
this.sRegularString = sRegularString;
this.roOption = roOption;
ctrT = new Control();
this.JobCompletePretreat += new JobCompleteHandle(BGWorker_JobCompletePretreat);
thrT = new System.Threading.Thread(new System.Threading.ThreadStart(DoJob));
}

//本来在这个事件里想要转到另一个线程去，结果不成功
void BGWorker_JobCompletePretreat(System.Text.RegularExpressions.MatchCollection e)
{
if (ctrT.InvokeRequired)//这个属性总是为false，奇怪！
{
SetMatchCollectionCallback smcT = new SetMatchCollectionCallback(BGWorker_JobCompletePretreat);
this.Invoke(smcT, new object[] { e });
}
else
{
JobComplete(e);
}
}

public void StartJob()
{
thrT.Start();
}

void DoJob()
{
System.Text.RegularExpressions.Regex reT = new System.Text.RegularExpressions.Regex(sRegularString, roOption);
System.Text.RegularExpressions.MatchCollection mcT = reT.Matches(sToTreat);
JobCompletePretreat(mcT);
}
}
}

[yhy0611]

楼上的都说了，线程间传递消息使用事件

[boblaw]

//首先，在程序中声明一个delegate，并声明一个方法与delegate一致

        delegate void AppendText(string text);
        private void AppendTextTask(string text)
        {
            textBox2.AppendText(text);
        }

然后将 textBox2.AppendText(e[I].Value);改为如下代码

        AppendText d=new AppendText(AppendTextTask);
        this.Invoke(d,new object[]{e[I].Value});

[starj1]

看了楼上几位的回复，让我有一个结论：
就是说没有办法在上面程序里的BGWorker类里DoJob子线程完成后，就回到类的创建者的线程里再发出JobComplete事件了？
我的目的就是这个啊。

[zhangqq111]

textBox2.AppendText(e[I].Value);//线程间操作无效: 从不是创建控件“textBox2”的线程访问它。
上面这句话要用异步调用，也就是委托，因为其它线程 与form线程存在冲突

[duping9626]

要用异步委托处理

[panda3033]

回帖是一种美德！传说每天回帖即可获得 10 分可用分！

[panda3033]

同样的用invoke
然后在委托里写你调用创建者线程的事件

[jokeesloat]

晕 我还以为有结果了，一看只解决了在子线程中一步调用UI数据的问题。