C# 提取与 sevenzipsharp 和更新进度条，没有 UI 冻结

Question

我在文件提取时遇到了一些问题。进度条输出和提取一切都很好。但是当它运行时，UI 会冻结。我尝试使用Task.Run()但它与进度条配合不佳。或者也许我只是没有正确使用它。

有什么建议吗？

private void unzip(string path)
{
    this.progressBar1.Minimum = 0;
    this.progressBar1.Maximum = 100;
    progressBar1.Value = 0;
    this.progressBar1.Visible = true;
    var sevenZipPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), Environment.Is64BitProcess ? "x64" : "x86", "7z.dll");
    SevenZipBase.SetLibraryPath(sevenZipPath);
    var file = new SevenZipExtractor(path + @"temp.zip");
    file.Extracting += (sender, args) =>
        {
            this.progressBar1.Value = args.PercentDone; 
        };
    file.ExtractionFinished += (sender, args) =>
        {
            // Do stuff when done
        };

    //Extract the stuff
    file.ExtractArchive(path);
}

Answer 1

您可能需要查看 .NET Framework 中的 Progress<T> 对象 - 它简化了跨线程添加进度报告的过程。这是一篇很好的博客文章，比较了BackgroundWorker与Task.Run()。看看他如何在Task.Run()示例中使用Progress<T>。

更新 - 下面是它对您的示例的外观。我希望这能给你一个足够好的理解，以便将来能够使用Progress<T>类型。:D

private void unzip(string path)
{
    progressBar1.Minimum = 0;
    progressBar1.Maximum = 100;
    progressBar1.Value = 0;
    progressBar1.Visible = true;
    var progressHandler = new Progress<byte>(
        percentDone => progressBar1.Value = percentDone);
    var progress = progressHandler as IProgress<byte>;
    Task.Run(() =>
    {
        var sevenZipPath = Path.Combine(
            Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location),
            Environment.Is64BitProcess ? "x64" : "x86", "7z.dll");
        SevenZipBase.SetLibraryPath(sevenZipPath);

        var file = new SevenZipExtractor(path);
        file.Extracting += (sender, args) =>
        {
            progress.Report(args.PercentDone);
        };
        file.ExtractionFinished += (sender, args) =>
        {
            // Do stuff when done
        };
        //Extract the stuff
        file.ExtractArchive(Path.GetDirectoryName(path));
    });
}