[XAML] Fix exception in WholeItemsPanel (#8839)

paulcam206 · web-flow · commit e36e4996d5e5 · 2024-02-29T21:08:22.000Z
diff --git a/source/uwp/SharedRenderer/lib/WholeItemsPanel.cpp b/source/uwp/SharedRenderer/lib/WholeItemsPanel.cpp
@@ -354,7 +354,7 @@ namespace winrt::AdaptiveCards::Rendering::Xaml_Rendering::implementation
         for (auto child : panel.Children())
         {
             // Subgroups (columns) are implemented with WholeItemsPanel
-            if (auto childAsWholeItemPanel = child.as<winrt::WholeItemsPanel>())
+            if (auto childAsWholeItemPanel = child.try_as<winrt::WholeItemsPanel>())
             {
                 if (childAsWholeItemPanel.IsTruncated())
                 {

Original file line number	Diff line number	Diff line change
`@@ -354,7 +354,7 @@ namespace winrt::AdaptiveCards::Rendering::Xaml_Rendering::implementation`
`354`	`354`	`for (auto child : panel.Children())`
`355`	`355`	`{`
`356`	`356`	`// Subgroups (columns) are implemented with WholeItemsPanel`
`357`		`- if (auto childAsWholeItemPanel = child.as<winrt::WholeItemsPanel>())`
	`357`	`+ if (auto childAsWholeItemPanel = child.try_as<winrt::WholeItemsPanel>())`
`358`	`358`	`{`
`359`	`359`	`if (childAsWholeItemPanel.IsTruncated())`
`360`	`360`	`{`