操作结束时的BeginInvoke更新控件 [英] BeginInvoke update control at end of operation

问题描述

我正在进行文件复制程序，其中进度条显示文件复制进度。我已经创建了将执行文件读写工作的线程。

I am doing file copy program with progress bar showing file copied progress.I have created thread which will do the file reading and writing work.

public partial class FileCopy : Form
{
  onStartButtonClick()
  {
      Thread fileReaderWriter = new Thread(new ThreadStart(doFileCopy));
      fileReaderWriter.Start();
  }
  doFileCopy()
  {
    while(file.length> 0)
    {
      //read data 
      //write data
      reportProgress(someValue);
    }
   MessageBox.show("File Copied");
   disableControl();
  }
  private void disableControl()
  {
    progressbar1.hide();
  }
   private void ReportProgress(int _nValue)
        {
            progressBar1.BeginInvoke((Action)(() =>
            {
                progressBar1.Value = _nValue;
                progressBar1.Update();
            }));

            label4.BeginInvoke((Action)(() =>
            {
                label4.Text = " some Text";
            }));

            label5.BeginInvoke((Action)(() =>
            {
                label5.Text = " Time remaining  " + _lTimeRemaining + " s";
            }));       
        }
}
<pre>
Progress bar is get updated its not hiding the progressbar after file copied message.It get hange on disableControl() method.How can I hide progress bar?

推荐答案

为什么在创建的线程上调用加入？该操作导致UI线程被阻塞，直到创建的线程完成其工作...

Why do you call Join on the created thread? That operation causes the UI thread to be blocked until the created thread has finished its work...

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