wpf treeview does not show child objects
- by gangt
I have an object with child object(s) and I load it using linq. And I assign it to a treeView's itemssource.
treeView.DisplayMemberPath = "Name";
treeView.ItemsSource = tasks;
It shows only the parent nodes (task.name), I couldn't figure out how to add children (TaskItems.name).
All the examples show HierarchicalData in xaml. I need to do it in code-behind, just like the above code. Is it possible?
public class Task
{
public int Id;
public string Name;
public bool IsActive;
public List<TaskItem> TaskItems = new List<TaskItem>();
}
public class TaskItem
{
public int TaskId;
public string Name;
public string Value;
}
--------------
var tasks1 = from t in xd.Descendants("taskheader")
select new Task
{
Id = (int)t.Element("id"),
Name = t.Element("name").Value,
IsActive = t.Element("isactive").Value == "1",
TaskItems = t.Elements("taskdetail").Select(e => new TaskItem
{
TaskId = (int)e.Element("taskid"),
Name = (string)e.Element("name"),
Value = (string)e.Element("value"),
}).ToList()
};
--------------
List<Task> tasks = new List<Task>();
tasks = tasks1;
