Wpf containerfromitem null

ContainerFromIndex index method. You can try to handle the Loaded event of the RadTileView control and place your logic inside the handler.

Let me know if this approach works for you. Kind regards, Pavel R. Pavlov the Telerik team. My code snippet is being run in respond to a user want to reset the tile layout to the original layout, so the tiles have already been created and visible on the screen. The ItemContainerGenerator. Note -- I am running version Collectives on Stack Overflow.

Learn more. ContainerFromItem returns null? Ask Question. Asked 10 years, 6 months ago. Active 5 years, 11 months ago. Viewed 45k times. Any ideas? Here's the bit of code I'm using: this. Improve this question. Sonny Boy Sonny Boy 7, 17 17 gold badges 69 69 silver badges bronze badges. Can't you just iterate through Items, which would be a readonly collection but its contents would not be readonly? I tried that, too. ContainerFromIndex also returns null. The following link contains its answer.

Add a comment. Active Oldest Votes. UpdateLayout ; dataGrid. ScrollIntoView dataGrid. ContainerFromIndex index ; If you don't want the current location in the DataGrid to change, this probably isn't a good solution for you but if that's OK, it works without having to turn off virtualizing. Improve this answer. Community Bot 1 1 1 silver badge. Phred Menyhert Phred Menyhert 2, 4 4 gold badges 18 18 silver badges 19 19 bronze badges.

Thanks, this solved my problem. I was trying to set focus to an item that was not available yet. UpdateLayout worked great. I am also doing same but after items it return null : — Yawar. PS - Thanks for the hint H. Items, container as TreeViewItem ;. However, at runtime, I get an exception in the helper class you provided above at this line:. Still doesn't work. Always returns null.

I can't believe how badly Microsoft has obfuscated this control. I just want to iterate the friggin nodes and set expanded to True where appropriate. JustinAngel's method is great. But before you use it ,make sure that the treeviewitem has generated,or ,null is return. ExpandAll ; treeview. UpdateLayout ;. I have tried every possible solution given here but still getting null for level 2 hierarchical childs.. The Loaded event is not getting invoked at all.

But treeViewItem is getting null in Expand function.. I have tried the Loaded, Dispatcher, UpdateLayout methods.. I am creating a silverlight application. I am trying to expand the treevire items selectively on page load..

How to use the extension methos that you have mentioned in your blog? Can you please suggest me how can i expand the treeview node on page load?

Well the solution is much simpler than anyone has ever thought. Just set the IsExpanded property of the newly inserted node to true and that would take away all the pain : -Kuntal Kishore. Silverlight Developer Center. Sign in. United States English. Home Library Learn Downloads Forums. Ask a question. Quick access. Notify me of new comments via email. Notify me of new posts via email. Skip to content Somebody asked me about this on StackOverflow, and I gave him the wrong answer at first. SelectedItem is null.

Parent as TreeViewItem; Dispatcher. BeginInvoke DispatcherPriority.