C++ Async

gistfile1.cpp

create_task(FileIO::ReadTextAsync(file)).then([this, file](task<String^> task)
        {
            try
            {
                String^ fileContent = task.get();
                OutputTextBlock->Text = "The following text was read from '" + file->Name + "':\n\n" + fileContent;
            }
            catch(COMException^ ex)
            {
                rootPage->HandleFileNotFoundException(ex);
            }
        });