microsoft / microsoft/microsoft-ui-xaml

TreeView content entrance animation only runs once

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#10,004 1 comment 1 reaction 0 assignees View on GitHub

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area-TreeView bug team-Controls
Dominant language
C++
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Description

### Describe the bug

When you add some items to a TreeView for the first time, it's entrance animation is triggered and the items slide into position. However if you clear the contents, and then add a new set of items the animation isn't triggered again.

This contrasts with a ListView. Its entrance animation runs each time the list is cleared and new set of items added.

### Steps to reproduce the bug

.

### Expected behavior

A consistent ui experience.

### Screenshots

_No response_

### NuGet package version

WinUI 3 - Windows App SDK 1.6.0: 1.6.240829007

### Windows version

_No response_

### Additional context

_No response_

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the TreeView behavior in WinUI 3 with Windows App SDK 1.6.0, comparing it with the ListView behavior after clearing and repopulating items. Done means TreeView entrance animation runs again for newly added items after its contents are cleared, consistently with ListView.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop, frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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