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WinForm中BackgroundWorker控件用法简单实例

2019年07月18日  | 移动技术网IT编程  | 我要评论

本文实例讲述了winform中backgroundworker控件用法。分享给大家供大家参考。具体如下：

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
namespace winformapp
{
 public partial class form2 : form
 {
  backgroundworker backgroundworker;
  int i = 0;
  int len = 100;
  public form2()
  {
   initializecomponent();
   backgroundworker = new backgroundworker();
   backgroundworker.dowork += new doworkeventhandler(backgroundworker_dowork);
   backgroundworker.runworkercompleted += new runworkercompletedeventhandler(backgroundworker_runworkercompleted);
   backgroundworker.progresschanged += new progresschangedeventhandler(backgroundworker_progresschanged);
   backgroundworker.workerreportsprogress = true;
  }
  void backgroundworker_progresschanged(object sender, progresschangedeventargs e)
  {
   threadinvoke.setmethodinvokevalue(label2, "进度:" + e.progresspercentage.tostring());
   //progressbar.value = e.progresspercentage;
  }
  void backgroundworker_runworkercompleted(object sender, runworkercompletedeventargs e)
  {
   threadinvoke.setmethodinvokevalue(label3, "结果:completed");
  }
  void backgroundworker_dowork(object sender, doworkeventargs e)
  {
   threadinvoke.setmethodinvokevalue(label3, "结果:start");
   while (i < len)
   {
    i++;
    system.threading.thread.sleep(100);
    threadinvoke.setmethodinvokevalue(label1, "工作:" + (i * 10).tostring());
    backgroundworker.reportprogress(i);
    application.doevents();
   }
  }
  private void button1_click(object sender, eventargs e)
  {
   backgroundworker.runworkerasync();
  }
 }
}

希望本文所述对大家的c#程序设计有所帮助。

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