backgroundWorker和progressChanged不工作

Question

我無法獲得進度條的工作！如果即使代碼被執行ReportProgress犯規我執行下面的代碼吧保留爲空似乎任何更新..：

namespace GPUZ_2 

{ 
public partial class Form1 : Form 
{ 
    public Form1() 
    { 
     InitializeComponent(); 

     GPUZdata test = new GPUZdata 
     { 
     }; 

     //invio l'oggetto al thread backgroundworker 
     backgroundWorker1.RunWorkerAsync(test); 
    } 


    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) 
    { 
     // 
     // e.Argument always contains whatever was sent to the background worker 
     // in RunWorkerAsync. We can simply cast it to its original type. 
     // 
     GPUZdata argumentTest = e.Argument as GPUZdata; 




     argumentTest.OneValue = 6; 
     Thread.Sleep(2000); 
     backgroundWorker1.ReportProgress(50); 
     argumentTest.TwoValue = 3; 
     Thread.Sleep(2000); 
     backgroundWorker1.ReportProgress(100); 


     // 
     // Now, return the values we generated in this method. 
     // Always use e.Result. 
     // 
     e.Result = argumentTest; 
    } 


    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) 
    { 

     // Receive the result from DoWork, and display it. 

     GPUZdata test = e.Result as GPUZdata; 
     this.Text = test.OneValue.ToString() + " " + test.TwoValue.ToString(); 

    } 

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) 
    { 
     // Change the value of the ProgressBar to the BackgroundWorker progress. 
     progressBar1.Value = e.ProgressPercentage; 
     // Set the text. 
     this.Text = e.ProgressPercentage.ToString(); 
    } 
} 

}

在此先感謝您的幫助

Answer 1

要初始化BackgroundWorker的，您必須啓用進度報告並掛上你的事件處理程序：

// Enable progress reporting 
backgroundWorker1.WorkerReportsProgress = true; 

// Hook up event handlers 
backgroundWorker1.DoWork += backgroundWorker1_DoWork; 
backgroundWorker1.RunWorkerCompleted += backgroundWorker1_RunWorkerCompleted; 
backgroundWorker1.ProgressChanged += backgroundWorker1_ProgressChanged; 

Answer 2

我不「看不到你設置WorkerReportsProgress屬性爲true - 最有可能的問題是：

backgroundWorker1.WorkerReportsProgress = true; 
backgroundWorker1.RunWorkerAsync(test); 

Answer 3

我有同樣的問題。在AssemblyInfo.cs中，您應該對ComVisible進行此更改。你需要

[assembly: ComVisible(true)]