Concurrently awaiting multiple asynchronous calls with independent continuations

Question

There are several scenarios where I need to invoke multiple asynchronous calls (from the same event handler) that can proceed independently of each other, with each one havi

Answer 1

As I understand it, you need to query three async resources and only update the UI once all three have returned. If that's correct the Task.WhenAll control is idea to use. Something like

private async void button_Click(object sender, RoutedEventArgs e)
{
    string nametext = null;
    string citytext = null;
    string ranktext = null;

    await Task.WhenAll(
        async () => nametext = await GetNameAsync(),
        async () => citytext = await GetCityAsync(),
        async () => ranktext = await GetRankAsync()
    );

    nameTextBox.Text = nametext;
    nameCityBox.Text = citytext;
    nameRankBox.Text = ranktext;
}