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3
Votes

Value of SelectionChanged.RemovedItems isn't as expected after collapsing groups

When collapsing a group, the grid's selection is cleared.

However, the event arguments for SelectionChanged do not reflect that change.



Attached is a simple project to reproduce the issue.


The test steps done with the console output for each of them:

  1. Expand the group:
    Added: 1 | Removed: 0 | TotalSelected: 0
  2. Select first row:
    Added: 1 | Removed: 1 | TotalSelected: 1
  3. Select second row:
    Added: 1 | Removed: 0 | TotalSelected: 2
  4. Collapse group:
    Added: 1 | Removed: 0 | TotalSelected: 0

    Expected output for this step:
    Added: 1 | Removed: 2 | TotalSelected: 0