C#, WPF, Updating the gui without backgroundworkers

Question

I have a program that takes 10-20 seconds to start. I need to show a window with a progress bar when the program starts up. I know BackgroundWorker\'s are the correct way to do

Answer 1

It really is very easy to use backgroundworker.

public partial class Window1 : Window
{
    BackgroundWorker worker = new BackgroundWorker();

    public Window1()
    {
        worker.DoWork += new DoWorkEventHandler(worker_DoWork);
        worker.ReportsProgress = true;
        worker.ProgressChanged += new ProgressChangedEventHandler(update_progress);
    }


    void worker_DoWork(object sender, DoWorkEventArgs e){
        DoSomeLongTask();
        //call worker.ReportProgress to update bar
    }

    void update_progress(object sender, ProgressChangedEventArgs e)
    {
        myscrollbar.Value = e.Value;
    }
}

The keything to keep in mind is to never touch gui stuff from DoWork method. That has to through ProgressChanged/ReportProgress