public static async void BuildDataGridCellContent(DataGridCell cell, Func<CancellationToken, Task<FrameworkElement>> getContentFunction)
{
var originalContent = cell.Content;
using (var cancellationTokenSource = new CancellationTokenSource())
{
FrameworkElement element;
KeyEventHandler keyDownHandler = (sender, args) => cancellationTokenSource.CancelOnEscape(args.Key);
try
{
cell.KeyDown += keyDownHandler;
cell.Content = CreateTextBlock("Loading... ");
element = await getContentFunction(cancellationTokenSource.Token);
}
catch (OperationCanceledException)
{
cell.Content = originalContent;
return;
}
catch (Exception exception)
{
var textBlock = CreateTextBlock(exception.Message);
textBlock.Background = Brushes.Red;
element = textBlock;
}
finally
{
cell.KeyDown -= keyDownHandler;
}
cell.Content = ConfigureAndWrapUsingScrollViewerIfNeeded(cell, originalContent, element);
}
}