2017-04-18 07:52:04 +08:00
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## Accessing a WPF DataGrid's selected items from a handler of the DataGrid's UnloadingRow event can cause a NullReferenceException
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2017-04-06 04:52:19 +08:00
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### Scope
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Minor
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### Version Introduced
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4.5
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### Version Reverted
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4.6
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### Source Analyzer Status
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Planned
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### Change Description
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2017-04-21 02:19:05 +08:00
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Due to a bug in the .NET Framework 4.5, event handlers for
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<xref:System.Windows.Controls.DataGrid> events involving the removal of a row
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can cause a <xref:System.NullReferenceException?displayProperty=name> to be
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thrown if they access the
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<xref:System.Windows.Controls.DataGrid>'s
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<xref:System.Windows.Controls.Primitives.Selector.SelectedItem?displayProperty=name>
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or <xref:System.Windows.Controls.Primitives.MultiSelector.SelectedItems?displayProperty=name>
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properties.
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2017-04-06 04:52:19 +08:00
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- [ ] Quirked
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- [ ] Build-time break
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### Recommended Action
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This issue has been fixed in the .NET Framework 4.6 and may be addressed by upgrading to that version of the .NET Framework.
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### Affected APIs
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* `E:System.Windows.Controls.DataGrid.UnloadingRow`
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* `E:System.Windows.Controls.DataGrid.UnloadingRowDetails`
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### Category
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Windows Presentation Foundation (WPF)
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2017-04-18 07:52:04 +08:00
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<!-- breaking change id: 107 -->
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