WebDec 14, 2024 · Looks like WebClient.DownloadFileAsync returns 'void'. This doesn't work with await. To simplify: the 'await' operator works by taking a Task or Task and "pausing" the method until the task is complete. You should see if you can rewrite your sample using a newer API like HttpClient and GetStreamAsync. Share Improve this … WebSep 4, 2015 · Why does the downloading begin before WaitAll is called? First of all, you're not calling Task.WaitAll, which synchronously blocks, you're calling Task.WhenAll, which returns an awaitable which should be awaited.. Now, as others said, when you call an async method, even without using await on it, it fires the asynchronous operation, because any …
c# - DownloadFile vs DownloadFileAsync - Stack Overflow
WebApr 3, 2024 · public void getFile() { var pathToNewFolder = cacheDir; Directory.CreateDirectory(pathToNewFolder); try { WebClient webClient = new WebClient(); webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed); WebMay 17, 2016 · Normally if a function has an async variant it is the async-await version. Instead of void it returns Task and instead of TResult it returns Task . Alas WebClient already has an DownloadFileAsync. Therefore they created a DownloadFileTaskAsync. That one returns an (awaitable) Task – Harald Coppoolse … patinando a la gloria ver
Download file async using WebClient doens
WebApr 2, 2024 · WebClient webClient = new WebClient (); webClient.DownloadFileCompleted += new AsyncCompletedEventHandler (Completed); … WebJun 3, 2015 · Create a WebClientAsync class that implements the timer in the constructor. This way you aren't copying and pasting the timer code into every implementation. public class WebClientAsync : WebClient { private int _timeoutMilliseconds; public EdmapWebClientAsync (int timeoutSeconds) { _timeoutMilliseconds = timeoutSeconds * … WebDec 15, 2024 · 8. First, you should declare the three smaller tasks as Task instead of Task, otherwise you won't get anything in res. Of course, that's not a problem if you don't need anything in res. The more important issue here is that you should use WhenAll instead of WaitAll. The former returns a Task or Task for you to await, whereas the ... patina negra para cobre