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WPF TreeView focusing on newly added item

I have a sorted tree with a lot of items. When I add a new item, I would like the new item to be selected and displayed on the screen. For example: if I see the first 10 items on the screen, and a new item is added at the 20th position, then the view should change to represent the newly added item (it can be first on screen, last or in the middle - it doesn't matter). I can get the selection working after reading some blog posts. Please help me learn how to achieve the desired display functionality.

Lukash Glaz

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2 answers


I suggest you take a look at this article where the author shows you how to use the attached behavior. With this behavior, you can do everything in XAML:

 <TreeView.ItemContainerStyle>
  <Style TargetType="{x:Type TreeViewItem}">
    <Setter 
      Property="local:TreeViewItemBehavior.IsBroughtIntoViewWhenSelected" 
      Value="True" 
      />
    </Setter>
   </Style>
  </TreeView.ItemContainerStyle>


Where IsBroughtIntoViewWhenSelected is the attached property.

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If you already have one TreeViewItem

that matches your recently added item, all you have to do is call yourItem.BringIntoView()

.



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