I have method which create background thread to make some action. In this background thread I create object. But this object while creating in runtime give me an exception :

The calling thread must be STA, because many UI components require this.

I know that I must use Dispatcher to make reflect something to UI. But in this case I just create an object and dont iteract with UI. This is my code:

    public void SomeMethod()
      {
         BackgroundWorker worker = new BackgroundWorker();
         worker.DoWork += new DoWorkEventHandler(Background_Method);
         worker.RunWorkerAsync();
      }

   void Background_Method(object sender, DoWorkEventArgs e)
      {
         TreeView tv = new TreeView();
      }

How can I create objects in background thread?

I use WPF application