uwp inability append text to File

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uwp inability append text to File



I create a text file by this code:


StorageFile file = await DownloadsFolder.CreateFileAsync(
listFile.Name, CreationCollisionOption.GenerateUniqueName);

try

await FileIO.AppendTextAsync(file, user.ID + ", " + user.Username + ","
+ name + ", " + user.Follower + ", " + user.Following + ", "
+ user.Post + ", " + user.MidLike + ", " + user.Public + ", "
+ Biography + ", " + user.LastPage.ToShortDateString() + ", "
+ user.Kind + ", " + user.Like + ", " + user.CM + ", "
+ user.View + ", " + Cap + "rn");

await CachedFileManager.CompleteUpdatesAsync(file);

catch(Exception ex)

MessageDialog message = new MessageDialog(ex.ToString());
await message.ShowAsync();



Sometimes I get the following error:



System.Exception: Unable to remove the file to be replaced. (Exception from HRESULT: 0x80070497)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Khorma.CommandPage.d__6.MoveNext()





Do you have any other code to remove the file? I tried your above code but could not reproduce it, could you provide a reproducible sample? By the way, in your above code, it seems you use varibile File and file, are they the same one?
– Breeze Liu - MSFT
Aug 13 at 5:50





Can you please call CachedFileManager.DeferUpdates(file); before FileIO.AppendTextAsync?
– TheTanic
Aug 13 at 7:08









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