我有一名背景 worker 。在调用工作程序之前,请先禁用按钮并使gif可见。然后,我调用runworkerasync方法,该方法可以正常运行直至完成。在“RunWorkerCompleted()”上,我收到一个跨线程错误。知道为什么吗?

    private void buttonRun_Click(object sender, EventArgs e)
    {
        if (comboBoxFiscalYear.SelectedIndex != -1 && !string.IsNullOrEmpty(textBoxFolderLoc.Text))
        {
            try
            {
                u = new UpdateDispositionReports(
                    Convert.ToInt32(comboBoxFiscalYear.SelectedItem.ToString())
                    , textBoxFolderLoc.Text
                    , Properties.Settings.Default.TemplatePath
                    , Properties.Settings.Default.ConnStr);
                this.buttonRun.Enabled = false;
                this.pictureBox1.Visible = true;

                BackgroundWorker bw = new BackgroundWorker();
                bw.DoWork += new DoWorkEventHandler(bw_DoWork);
                bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
                bw.RunWorkerAsync();
                //backgroundWorker1.RunWorkerAsync();
            }
            catch (Exception ex)
            {
                MessageBox.Show("Unable to process.\nError:" + ex.Message, Properties.Settings.Default.AppName);
            }
        }
    }

    void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        buttonRun.Enabled = true;
        pictureBox1.Visible = false;
    }

    void bw_DoWork(object sender, DoWorkEventArgs e)
    {
        u.Execute();
    }

最佳答案

VSTO和BackgroundWorker似乎是一个问题。

解决方案是here

基本上你需要打电话

System.Threading.SynchronizationContext.SetSynchronizationContext(new WindowsFormsSynchronizationContext());

在您致电RunWorkerAsync之前。效果很好。

为了避免每次在AddIn的主类中都有一个静态成员并实例化该对象时,都要实例化该对象。这样,您只需实例化一次。

关于c# - BackgroundWorker无法在VSTO中工作,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/2449515/

10-12 18:34