如何允许backgroundworker更新UI并为其设置(metro)Progressing?

就在半年前,我还在学习c。 我有一个帮助我工作的程序,它与我工作场所的4种数据库进行通信。它工作得很好,但现在我想设计得更酷一些,但当我想设置一个进度环时,我卡住了,因为我的方法在与数据库通信时冻结了UI。 我想设置一个后台工作程序,我尝试了所有我发现的东西,甚至调用,但都没有成功。

public partial class MainWindow : MetroWindow
{
    BackgroundWorker workerThread = null;

    public MainWindow()
    {
        InitializeComponent();
        InstantiateWorkerThread();

        progressrinG.IsActive = true;
    }
    private void InstantiateWorkerThread()
    {
        workerThread = new BackgroundWorker();
        workerThread.ProgressChanged += WorkerThread_ProgressChanged;
        workerThread.DoWork += WorkerThread_DoWork;
        workerThread.RunWorkerCompleted += WorkerThread_RunWorkerCompleted;
        workerThread.WorkerReportsProgress = true;
        //workerThread.WorkerSupportsCancellation = true;
    }

    private void WorkerThread_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {

    }
    private void WorkerThread_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {

    }
    private void WorkerThread_DoWork(object sender, DoWorkEventArgs e)
    {
        //My huge method,asking 4 database that would update UI too
        //... Textboxes,Grids,Expanders.
    }

    private void Button3_Click(object sender, RoutedEventArgs e)
    {
        workerThread.RunWorkerAsync();

        while (workerThread.IsBusy)
        {
            progressrinG.Visibility = Visibility.Visible;
        }
    }
}

即使使用Invoke,当我按下按钮时,5-10秒后它完成了我的方法,但我的应用程序在执行时被冻结,我看不到进程。

你知道我做错了什么吗?或者我该怎么办?提前感谢!