C＃WPF更改資源在點擊

Question

我的XAML是在這裏：

<Window.Resources> 
    <XmlDataProvider x:Key="rssSource" XPath="//item" Source="https://news.google.com/news?output=rss" /> 
</Window.Resources> 

我需要改變它的時候按鈕單擊事件：

<Window.Resources> 
    <XmlDataProvider x:Key="rssSource" XPath="//item" Source="CHANGE WITH TEXTBOX VALUE" /> 
</Window.Resources> 

我該怎麼辦呢？

Answer 1

像這也許

 XmlDataProvider provider = (XmlDataProvider) this.FindResource("rssSource"); 
     provider.Source = new Uri("CHANGE WITH TEXTBOX VALUE"); 

Answer 2

裏面的按鈕單擊事件，就把這行：

((XmlDataProvider)Resources["rssSource"]).Source = new Uri("<New Source>");