Hi, In silverlight, with Expression blend 3, I have a TreeView in my MainPage.xaml. My TreeView data are Databinding wich came to xml fiel. Expression blend generate this xml fiel by a XAML fiel and a C#. SampleData.xaml and SampleData.C#. I want to every header en RefTitle (data in xml fiel) can call a different method. But In MainPage.cs i have no access to my data in SampelData.xaml. I use TreeView1.SelectedItem but this return if it is a header or a RefTitle but not the contain. Can you help me? Thaks Val