如何使用进度条从线程获取retun值 [英] how to get the retun value from thread using progress bar

问题描述

我在我的应用程序中使用

进度条

。

 thread 

从数据库下载数据并将其转换为表格。当 thread 完成表将下载的工作时。

i在线程进程的下载表中有问题。



如何从线程中获取输出

  protected   void  btnStart_Click（ object  sender，EventArgs e） 
 {
 StringBuilder threadBuilder =  new  StringBuilder（）; 
 ProgressBar1.Visible =  true ; 
 pReadytoDown.Visible =  true ; 
进度进度= ProgressBar1.Progress; 
线程thread =  new 线程（（）= >  {threadBuilder =开始（进度） ; 
< big> _builder < /   big  >  = threadBuilder; 
 
}）; 
 thread.Start（）; 
 btnStart.Enabled =  false ; 
 
  //   ProgressBar1.Completed = false;  
} 
 

我用全局静态变量来解决这个问题



谢谢

解决方案

  protected   void  btnStart_Click（ object  sender，EventArgs e）
 {
 StringBuilder threadBuilder =  new  StringBuilder（）; 
 ProgressBar1.Visible =  true ; 
 pReadytoDown.Visible =  true ; 
进度进度= ProgressBar1.Progress; 
线程thread =  new 线程（（）= {threadBuilder =开始（进度）; 
 _builder = threadBuilder; 
 
}）; 
 thread.Start（）; 
 btnStart.Enabled =  false ; 
 
  //   ProgressBar1.Completed = false;  
} 
 

答案有问题。

从线程聚焦方法返回值简单。

threadBuilder 是返回值

i'm using the

progress bar

in my application.

thread

download the data from database and it's convert into table. when thread finish the work that table will download.
i have an issue in download table from thread process.

how to get the output from the thread

protected void btnStart_Click(object sender, EventArgs e)
   {
       StringBuilder threadBuilder = new StringBuilder();
       ProgressBar1.Visible = true;
       pReadytoDown.Visible = true;
       Progress progress = ProgressBar1.Progress;
       Thread thread = new Thread(() => { threadBuilder = Start(progress);
      <big> _builder</big> = threadBuilder;

       });
       thread.Start();
       btnStart.Enabled = false;

       //ProgressBar1.Completed = false;
   }

i'm used the global static variable to solve this problem

thank you

解决方案

protected void btnStart_Click(object sender, EventArgs e)
   {
       StringBuilder threadBuilder = new StringBuilder();
       ProgressBar1.Visible = true;
       pReadytoDown.Visible = true;
       Progress progress = ProgressBar1.Progress;
       Thread thread = new Thread(() = { threadBuilder= Start(progress);
       _builder = threadBuilder;

       });
       thread.Start();
       btnStart.Enabled = false;

       //ProgressBar1.Completed = false;
   }

answer is in ques.
return the value from the thread focusing method simple.
threadBuilder is the return value

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