问题描述

BackgroundWorker 页面假死

大家好，我的程序要做的是这样的，这是一个主启动界面，页面启动后，后台去检查服务器上的版本。但是在进去这个主页面时，图片和文字都不显示（白屏），到最后才显示图片和文字，请教大家解决一下，我想要的效果，页面完全加载后（图片和文字都显示），再执行异步操作。
图片说明

public partial class frmStartProgress : Form
{
///
/// The configuration for the AppStart process.
///
private static AppStartConfiguration config = null;

    /// <summary>
    /// The process of the running application.
    /// </summary>
    private static Process applicationProcess;

    BackgroundWorker worker = new BackgroundWorker();

    public frmStartProgress()
    {
        InitializeComponent();
        config = (AppStartConfiguration)System.Configuration.ConfigurationManager.GetSection("appStart");
        label1.Text = string.Format("正在启动{0}系统，请稍候...", config.ApplicationName);
                    ---------【****文字没有显示****】
    }

    private void frmStartProgress_Load(object sender, EventArgs e)
    {
        ////  Grab our config instance which we use to read app.config params, figure out
        ////  WHERE our target app is and WHAT version          

        worker.WorkerReportsProgress = true;
        worker.DoWork += new DoWorkEventHandler(worker_DoWork);
        worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted);
        worker.ProgressChanged += new ProgressChangedEventHandler(worker_ProgressChanged);
        worker.RunWorkerAsync();
    }

    void worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        this.progressBar1.Value = e.ProgressPercentage;
        this.label1.Text = e.UserState.ToString();
    }

    void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        this.Close();
    }

    void worker_DoWork(object sender, DoWorkEventArgs e)
    {
        StartAppProcess();
    }

    public delegate void AutoUpdateDelegate();

    private void ChangeThread(AutoUpdateDelegate aud)
    {
        if (this.InvokeRequired)
        {
            this.Invoke(aud);
        }
    }

    /// <summary>
    /// Main process code.
    /// </summary>

    private void StartAppProcess()
    {
        ClearUpdateVersionFiles();

        worker.ReportProgress(20, "正在检查是否有新的版本...");
                    ----【**文字没有显示**】

        bool processStarted = false;

        if (config.UpdateTime == UpdateTimeEnum.BeforeStart)
        {
            //UpdateApplication();
            ChangeThread(UpdateApplication);
        }

        //Start the application
        try
        {
            worker.ReportProgress(50, "正在初始化应用程序");
    ........【**文字开始显示，图片也显示**】

解决方案

还记得BackgroundWorker吗？
BackgroundWorker 摘录

解决方案二：

自己研究才是最深的理解………………