NullReferenceException when SelectAll for collection of value types
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Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 35/100
Research direction
Start by locating the SelectAllSelector implementation and the SelectAll/UnselectAll methods used by CheckComboBox. Reproduce the issue with a value-type or enum collection, then trace the SelectedItems handling. Done means selecting or unselecting all items no longer throws a NullReferenceException for value types.
Written by the indexing model from the issue text.
Description
A NullReferenceException is thrown when the SelectAll/UnselectAll methods within SelectAllSelector are called and the SelectedItems collection items type is a value type.
For example you could have CheckComboBox with enums as items. When clicking the Select all checkbox a NullReferenceException is thrown.
- Dominant language
- C#
- Stars
- 4.2k
- Forks
- 912
- PR merge metrics
- No merged PRs in 30d
Getting set up
This project ships no dev container, Dockerfile or contributing guide, so setting up is up to you: start from its README, and see our first-contribution guide for the general steps.
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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