WPF TreeView 具有多个项目来源

Question

I am stuck on a problem with the wpf treeview control in my current application. I'm building a visual studio like application (editor with project tree) for my school.

Now i have the problem that I can't display this structure in my treeview.

I'd like to have the following structure:

+ Project
  - Folder
    -- Folder
    -- File
  - Folder
  - File

+ Project
...

I've tried a lot of things I found around the internet, but not one of them really did work..

Thanks for your help.

Answer 1

Have you tried HierarchicalDataTemplate? You can find solution here: http://www.codeproject.com/KB/WPF/TreeViewWithViewModel.aspx

Answer 2

Since you always mention that you need multiple ItemsSources i think your problem is that your project object has two collections: Files & Folders and you don't know how to put both of them into the HierarchicalDataTemplate's ItemsSource.

The solution to that is the CompositeCollection . Note that if you construct it in XAML you will not have a DataContext inside the CollectionContainers , so you cannot bind the Collection property that easily.

Answer 3

You'll have to use a DataTemplateSelector , see the example here:

http://www.switchonthecode.com/tutorials/wpf-tutorial-how-to-use-a-datatemplateselector