Comments on: Selecting an item in a TreeView in WPF

By: Haim

Haim — Wed, 23 Nov 2011 14:22:06 +0000

Thanks, this was very helpful
I changed the function SetSelectedItem to take TreeViewItem instead of TreeView since I knew the level of the tree I needed to search to take place SetSelectedItem(TreeViewItem treeViewItem, object item)

By: Roman Łubkowski

Roman Łubkowski — Thu, 17 Nov 2011 21:47:47 +0000

Thanks for the code. You really saved my ass!!!

By: Christian

Christian — Wed, 07 Sep 2011 10:27:31 +0000

Thanks a lot, works perfect ;)

By: combuilder

combuilder — Fri, 02 Sep 2011 21:11:19 +0000

I tried your code but i cannot do it work when some “items” (nodes) are not treeviewitem. Any help will be appreciate

By: Gerrod

Gerrod — Thu, 28 Jul 2011 21:18:40 +0000

Hi Matt – not sure why it doesn’t copy and paste properly… try this:

static public bool SetSelectedItem(
this TreeView treeView, object item) {

return SetSelected(treeView, item);
}

static private bool SetSelected(ItemsControl parent,
object child) {

if (parent == null || child == null) {
return false;
}

TreeViewItem childNode = parent.ItemContainerGenerator
.ContainerFromItem(child) as TreeViewItem;

if (childNode != null) {
childNode.Focus();
return childNode.IsSelected = true;
}

if (parent.Items.Count > 0) {
foreach (object childItem in parent.Items) {
ItemsControl childControl = parent
.ItemContainerGenerator
.ContainerFromItem(childItem)
as ItemsControl;

if (SetSelected(childControl, child)) {
return true;
}
}
}

return false;
}

By: Matt

Matt — Thu, 28 Jul 2011 14:10:14 +0000

Thanks for the code! However, when I try and copy and paste the code from the entry, it all ends up on one long line when pasted, rendering it useless. Is there a way to copy and paste it so that it ends up on multiple lines like it appears here?

Sometimes things that you wish were simple just aren’t :D

By: Alex

Alex — Fri, 13 May 2011 15:50:05 +0000

Thanks. Helped a lot!
Alex.

By: Anuj Pratap Singh

Anuj Pratap Singh — Fri, 10 Sep 2010 14:17:45 +0000

Your blog helped me alot. Thanx alot.

By: akjoshi

akjoshi — Fri, 06 Aug 2010 07:40:27 +0000

I have been trying to implement htis feature with virtualization enabled from past few days but no success, can you give any idea on how to do that?

By: Alexandr

Alexandr — Fri, 30 Jul 2010 13:33:42 +0000

Thanx a lot for this nice code!