我是编程和WPF架构的新手.我有一个使用backgroundworker类的WPF应用程序.但是,它总是抛出错误“调用线程必须是sta,因为许多ui组件都需要它”.我需要在我的main方法中添加STAThread属性.但是我不确定该怎么做.

public partial class MainWindow : Window
    {
public MainWindow()
        {
            InitializeComponent();

            this.backgroundWorker1 = new System.ComponentModel.BackgroundWorker();           

            InitializeBackgroundWorker();
            Thread.CurrentThread.SetApartmentState(ApartmentState.STA);
            tabItemList.CollectionChanged += this.TabCollectionChanged;
        }
}


 private void InitializeBackgroundWorker()
        {
            backgroundWorker1.DoWork +=
                new DoWorkEventHandler(backgroundWorker1_DoWork);
            backgroundWorker1.RunWorkerCompleted +=
                new RunWorkerCompletedEventHandler(
            backgroundWorker1_RunWorkerCompleted);
            backgroundWorker1.ProgressChanged +=
                new ProgressChangedEventHandler(
            backgroundWorker1_ProgressChanged);
        }

        // This event handler is where the actual, 
        // potentially time-consuming work is done. 
        private void backgroundWorker1_DoWork(object sender,
            DoWorkEventArgs e)
        {
            // Get the BackgroundWorker that raised this event.
            BackgroundWorker worker = sender as BackgroundWorker;

            // Assign the result of the computation 
            // to the Result property of the DoWorkEventArgs 
            // object. This is will be available to the  
            // RunWorkerCompleted eventhandler.
            //e.Result = AddTabitem((int)e.Argument, worker, e);
            AddTabitem((string)e.Argument, worker, e);
        }

 void AddTabitem(string filePath, BackgroundWorker worker, DoWorkEventArgs e)
        {
            if (File.Exists(filePath))
            {
//This line which throws error "the calling thread must be sta because many ui components require this"
                RichTextBox mcRTB = new RichTextBox();
                rtbList.Add(mcRTB);
}

解决方法:

您必须在启动线程之前设置ApartmentState.

http://blogs.msdn.com/b/jfoscoding/archive/2005/04/07/406341.aspx

要在您的WPF应用中设置公寓状态,
将[STAThread]属性添加到您的应用程序中,例如this：

public partial class App : Application
{
    App()
    {
        InitializeComponent();
    }

    [STAThread]
    static void Main()
    {
        Window1 window = new Window1();
        App app = new App();
        app.Run(window);
    }
}