Missing Critical Line of Code

[markolbert]

The example showing how to open the ContentDialog from within a window's event handler is missing a critical line of code, at least under the current version of WinUI 3:

private async void ShowLog_Click( object sender, RoutedEventArgs e )
{
    var dlg = new LogViewer();

    // this line is critical; without it, you get an obscure WinRT error message
     dlg.XamlRoot = App.Current.MainWindow!.Content.XamlRoot;

     await dlg.ShowAsync();
}

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Document Details

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• ID: 8d762be8-f952-5b02-4797-cf7c47fbb2ab
• Version Independent ID: 043b87f7-53b5-8d96-3312-9547c17c8673
• Content: ContentDialog Class (Microsoft.UI.Xaml.Controls) - WinUI
• Content Source: winui-api-build/xml/Microsoft.UI.Xaml.Controls/ContentDialog.xml
• Product: reunion
• Technology: winui-reference
• GitHub Login: @jwmsft
• Microsoft Alias: jimwalk