c# - Backgroundworker.Reportprogress 问题

Question

我的 bgworker 有一些问题。我想要完成的是我的 bgworker 报告将 zip 文件解压缩到我的文本框中的进度。这就是我想要显示的方式：
5%
10%
15%
20%
25%
等等。

这是我到目前为止所得到的：

int percentage;
percentage = count*100/array.Length;
worker.ReportProgress(percentage);

我的文本框名称是ContentTextBox.

这是可能有用的其余代码：

    private void UnpackBackgroundWorkerCompletedEvent(object sender, RunWorkerCompletedEventArgs e)
            {
                FileTextBox.Text = databaseName;
                ContentPanel.Visible = true;
                Text = "Check Database";

            }

            public void UnpackWorker(object sender, DoWorkEventArgs doWorkEventArgs)
            {
                if (FileTextBox.Text == "")
                {
                    MessageBox.Show("File textbox is empty");
                    return;
                }

                String fileName = FileTextBox.Text;
                if (!File.Exists(fileName))
                {
                    MessageBox.Show("File doesn't exist");
                    return;
                }

                Logger logger = new Logger(Path.ChangeExtension(FileTextBox.Text, ".log"), this, ContentTextBox);

                String status = "******** Unpacking zipfile '" + fileName + "' ";
                logger.Write("");
                logger.Write("********");
                logger.Write(status);
                logger.Write("********");

                string databaseFileName = Path.ChangeExtension(fileName, ".db");
                DatabaseUtils.RestoreDatabase(fileName, databaseFileName);
                logger.Write("Zipfile '" + fileName + "' unpacked to '" + databaseFileName + "'.");

                databaseName = databaseFileName;




            }

public void Run()
        {
            var unpackWorker = new BackgroundWorker();

            if (FileTextBox.Text.EndsWith(".zip"))
            {
                unpackWorker.DoWork += UnpackWorker;
                unpackWorker.RunWorkerAsync();
                unpackWorker.RunWorkerCompleted += UnpackBackgroundWorkerCompletedEvent;
            }
            else
            { MessageBox.Show("No zip selected")
            }

        }

编辑 要写入文本框，我必须使用 logger.Write() 因为我制作了 zip 解包输出的日志文件。

提前感谢您的帮助/建议

Answer 1

您应该处理BackgroundWorker.ProgressChanged事件并在其中更新您的文本框。此外，您可能应该RunWorkerCompleted在调用之前添加事件处理程序RunWorkerAsync()，以避免潜在的竞争条件。

unpackWorker.DoWork += UnpackWorker;
unpackWorker.RunWorkerCompleted += UnpackBackgroundWorkerCompletedEvent;
unpackWorker.ProgressChanged += SomeMethodThatUpdatesYourTextBox
unpackWorker.RunWorkerAsync();