Ste*_*ary 12
最简单的方法是编写一个async方法:
async Task DownloadAndFollowupAsync(...)
{
await DownloadAsync();
await FollowupAsync();
}
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您可以使用哪个await Task.WhenAll:
await Task.WhenAll(DownloadAndFollowupAsync(...),
DownloadAndFollowupAsync(...));
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