如何在wpf应用程序中为页面创建模态对话框?

I have a WPF Window which has a among other controls hosts a Frame. In that frame I display different pages. Is there way to make a dialog modal to only a page? When I'm showing the dialog it should not be possible to click on any control on the page but it should be possible to click on a control on the same window that is not on the page.I have a WPF Window which has a among other con