how can i await void of downloading in alttohttp library in c# .net?

when I was using WebClient it was working to make await before the code and it awaits to finish the download but in Alttohttp library it doesn't await due to it's a void.

this is the code :

httpdownloader = new HttpDownloader(uri, filename);
 httpdownloader.DownloadCompleted  = htppdownloaderU_Completed; 
httpdownloader.ProgressChanged  = httpdownloaderU_Progress;
 httpdownloader.StatusChanged  = httpdownloader_StatusChanged;
 await httpdownloader.Start(); // then after finishing the whole download

i want this code to continue the void code after finishing the download by this library

CodePudding user response：

If I understand correctly, you want to excecute something after the httpdownloader is done. If so, you can add your code in httpdownloaderU_Completed which is a delegate function that will be excecuted after your download is completed. Something like this:

 void httpdownloaderU_Completed(object sender, EventArgs e)
 {
   MessageBox.Show("Download comleted!");
   ...
 }

CodePudding user response：

I think you misunderstand how the library work. It is event-driven, so the only way to know if the download is complete is to check when the code enters the htppdownloaderU_Completed method. if you really want to continue after calling the Start() method, maybe you can have a global variable for the class that you set in that Method like

IsDownloadComplete = true;

and then instead of trying to do this:

await httpdownloader.Start();

you can do a while loop to wait for the download to complete. something like

httpdownloader.Start(); 
while(IsDownloadComplete == false)
{
   await Task.Delay(1000);
}

// Download is now complete, do something with the download
DoSomething();

but is probably not the most ideal way, and you should probably rethink, and just do everything you want to do after the download is complete from the htppdownloaderU_Completed method