保存到“下载”文件夹，DataWriter.FlushAsync 挂起 90 秒

本文关键字：FlushAsync DataWriter 挂起 文件夹 下载 保存 | 更新日期: 2023-09-27 18:34:22

代码：

private async Task<int> Save()
{
    StorageFile file = await DownloadsFolder.CreateFileAsync("a.exe");
    IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.ReadWrite);
    DataWriter writer = new DataWriter(stream);
    byte[] buffer = new byte[4096];
    writer.WriteBytes(buffer);
    await writer.StoreAsync();
    await writer.FlushAsync();    //Hang for a long time
    writer.Dispose();
    return 1001;  //eventually it can get to this line, no exception is thrown
}

编辑：

它在Win8 CP内部版本8250上找到，升级到内部版本8375后，问题消失了。所以我想这是一个已经在 winrt 或 win8 中修复的错误。

保存到“下载”文件夹，DataWriter.FlushAsync 挂起 90 秒

你可以尝试更多类似的东西：

using (var fs = await file.OpenAsync(FileAccessMode.ReadWrite))
{
    using (var outStream = fs.GetOutputStreamAt(0))
    {
        using (var dataWriter = new DataWriter(outStream))
        {
            byte[] buffer = new byte[4096];
            dataWriter.WriteBytes(buffer)
            await dataWriter.StoreAsync();
            dataWriter.DetachStream();
        }
        await outStream.FlushAsync();
    }
}
相关文章：