C# BackgroundWorker的RunWorkerAsync（）方法不'；t触发Do_工作事件

我使用backgroundworker设置了一个ProgressBar，以便在下载文件时显示进度。但是BackgroundWorker的RunWorkerAsync（）方法不会触发Do_工作事件

/**********窗口加载***********/

        BackgroundWorker backgroundWorker1;
    private void MainWindow_Load(object sender, RoutedEventArgs e)
    {
    backgroundWorker1=new BackgroundWorker();
    backgroundWorker1.WorkerReportsProgress=true;
    backgroundWorker1.DoWork +=new DoWorkEventHandler(backgroundWorker1_DoWork);
    backgroundWorker1.ProgressChanged +=new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
    backgroundWorker1.RunWorkerCompleted +=new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
    }

        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        ProgressBar1.Value = e.ProgressPercentage;
    }
    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        MessageBox.Show("File download complete");
    }


private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
    //Code to download a file and setting progressbar time. 
    }

/******点击按钮*******/

void Button_Click(object sender, RoutedEventArgs e)
    {
            backgroundWorker1.RunWorkerAsync();
    }

/****事件*********/

        BackgroundWorker backgroundWorker1;
    private void MainWindow_Load(object sender, RoutedEventArgs e)
    {
    backgroundWorker1=new BackgroundWorker();
    backgroundWorker1.WorkerReportsProgress=true;
    backgroundWorker1.DoWork +=new DoWorkEventHandler(backgroundWorker1_DoWork);
    backgroundWorker1.ProgressChanged +=new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
    backgroundWorker1.RunWorkerCompleted +=new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
    }

        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        ProgressBar1.Value = e.ProgressPercentage;
    }
    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        MessageBox.Show("File download complete");
    }


private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
    //Code to download a file and setting progressbar time. 
    }

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我是WPF的新手。非常感谢您的帮助。

您的代码看起来很好，代码没有任何更改。请尝试解决以下问题

检查您的点击事件是否正常…按钮点击是否正常

在click事件中放置断点，并在click事件起作用时进行调试

---

我建议你可以看一下这篇文章，这篇文章和你做的事情是一样的。。可能是您发现缺少了什么。

我设置了一个示例项目，并准确地使用了您的代码，它在编程方面没有任何问题，在我这方面工作得非常好

确保您已将按钮订阅到click事件，该事件似乎未被触发

<Button Content="Button" HorizontalAlignment="Left" Margin="153,42,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>

试试这个例子

<Button Content="Button" HorizontalAlignment="Left" Margin="165,58,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>

 private BackgroundWorker _backgroundWorker;
        public MainWindow()
        {
            InitializeComponent();
            _backgroundWorker = new BackgroundWorker();
            _backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker_DoWork);
            _backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker_ProgressChanged);
            _backgroundWorker.RunWorkerCompleted += backgroundWorker_RunWorkerCompleted;
            _backgroundWorker.WorkerReportsProgress = true;
            DataContext = this;


        }

        private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            var eee = e.Result;
        }

        private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            var progrss = e.ProgressPercentage;
        }

        private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            int p=10;
            for (int index = 0; index < p; index++)
            {
                object param = "something";
                Thread.Sleep(100);
                _backgroundWorker.ReportProgress(p, param);
                Thread.Sleep(1000);
                if (index == 10)
                {
                    break;
                } 
            } 

        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            _backgroundWorker.RunWorkerAsync(); 
        }

私人后台人员(u后台人员)；
公共主窗口（）
{
初始化组件（）；
_backgroundWorker=新的backgroundWorker（）；
_backgroundWorker.DoWork+=新的DoworkerVenthandler（backgroundWorker_DoWork）；
_backgroundWorker.ProgressChanged+=新的ProgressChangedEventHandler（backgroundWorker\u ProgressChanged）；
_backgroundWorker.RunWorkerCompleted+=backgroundWorker\u RunWorkerCompleted；
_backgroundWorker.WorkerReportsProgress=true；
DataContext=this；
}
私有void backgroundWorker_RunWorkerCompleted（对象发送方，runworkercompletedeventarge）
{
var eee=e.结果；
}
private void backgroundWorker_ProgressChanged（对象发送方，ProgressChangedEventArgs e）
{
var Progress=e.ProgressPercentage；
}
私有void backgroundWorker_DoWork（对象发送方，DoWorkEventArgs e）
{
int p=10；
对于（int-index=0；index

您也订阅了点击活动吗？对不起，我找不到您。我已经在WPF窗口中放置了一个按钮和进度条。贴在网上的答案确实描述了我的意思……我已经试过了。单击事件可以正常工作。我需要设置任何属性吗？@user3065219-不需要设置任何属性that@user3065219-查看我提供的帮助您解决问题的文章链接谢谢您的时间：）：我没有发现张贴的问题和您提供的答案在逻辑上有任何区别。