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Fix #5428: DataGrid with template columns causes crash when scrolling #11068

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Fix #5428: DataGrid with template columns causes crash when scrolling #11068

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6 changes: 6 additions & 0 deletions ...f/src/PresentationFramework/System/Windows/Automation/Peers/ItemsControlAutomationPeer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,12 @@ protected override List<AutomationPeer> GetChildrenCore()
dataItem = item;
}

if (dataItem == null)
{
// skip null items
continue;
}

// try to reuse old peer if it exists either in Current AT or in WeakRefStorage of Peers being sent to Client
ItemAutomationPeer peer = oldChildren[dataItem];
peer = ReusePeerForItem(peer, dataItem);
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