好吧，实际上ElementHost在其中显示了整个WPF应用程序.

我认为，它不允许您从外部(winforms appliction)更新诸如ContentPresenter之类的控件.

我认为公开一种方法可以为您创建ContentPresenter是一个好习惯.

Sacha Barbar提出了一个很好的扩展，可以处理跨线程问题.您可以看一下.
检查一下:

Well, actually ElementHost displays the whole WPF app within it.

I think, it does not allow you to update controls like ContentPresenter from outside(winforms appliction).

I think it would be a good practice to expose one method which will create this ContentPresenter for you.

Sacha Barbar proposed a good extension to work with Cross thread issues. You might take a look into it.
Check this :

public static void InvokeIfRequired(this DispatcherControl control, Action operation)
{
  if (control.Dispatcher.CheckAccess())
  {
    operation();
  }
  else
  {
    control.Dispatcher.BeginInvoke(DispatcherPriority.Normal, operation);
  }
}