public Task GetOrDownloadAsync(string url)
{
//simulate image download
IPendingOperation pendingOperation = null;
Console.WriteLine($"Downloading {url}");
Task.Delay(2000).ContinueWith(_ =>
{
Console.WriteLine($"Downloaded {url}");
pendingOperation.Complete();
});
pendingOperation = ServiceRef.RegisterPendingOperation(this, actionOnCompletion: (res) =>
{
//Accessing _images here would be risky, just wrap the call...
ServiceRef.Call(this, () =>
{
Console.WriteLine($"Adding to images {url}");
_images.Add(new ImageStuff()
{
Url = url, Data = new byte[] { 0x01 }
});
Console.WriteLine($"Added to images {url}");
});
});
return(Task.CompletedTask);
}
public void CompleteOperation()
{
OperationCompleted = true;
_pendingOperation.Complete();
}
public Task CompleteOperationAsync()
{
OperationCompleted = true;
_pendingOperation.Complete();
return(Task.CompletedTask);
}
