將字符串從後臺工作人員添加到列表框（調用）

Question

我對編碼c＃相當陌生，並試圖使用後臺工作人員（以避免停止我的GUI）運行ping循環，其結果將被打印到我的gui中的每個ping的列表框，就像一個標準的cmd提示符一樣。

我的代碼編譯但文本沒有出現在列表框中，任何關於我出錯的地方的幫助都很棒。

感謝

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) 
    { 
     int secs = DateTime.Now.Second; 
     while (keepgoing == true) 
     { 
      if (secs != DateTime.Now.Second) 
      { 
       secs = DateTime.Now.Second; 
       using (Ping p = new Ping()) 
       { 
        int hh = DateTime.Now.Hour; 
        int mm = DateTime.Now.Minute; 
        int ss = DateTime.Now.Second; 

        string time = ""; 

        if (hh < 10) 
        { 
         time += "0"; 
         time += hh; 
        } 
        else 
        { 
         time += hh; 
        } 
        time += ":"; 

        if (mm < 10) 
        { 
         time += "0"; 
         time += mm; 
        } 
        else 
        { 
         time += mm; 
        } 
        time += ":"; 

        if (ss < 10) 
        { 
         time += "0"; 
         time += ss; 
        } 
        else 
        { 
         time += ss; 
        } 
        string successString = ("Ping Successful - " +  p.Send(textBox2.Text).RoundtripTime.ToString() + "ms " + time + "\n"); 
        Invoke((Action<string>)AddItemBox2,successString); 
       } 
      } 
     } 
     listBox2.Items.Add("\n"); 
    } 

    private void listBox2_SelectedIndexChanged(object sender, EventArgs e) 
    { 

    } 
    private void AddItemBox2(string print) 
    { 
     listBox2.Items.Add(print); 
     listBox2.Refresh(); 
     listBox2.TopIndex = listBox2.Items.Count - 1; 
    } 

Answer 1

您的代碼爲我工作。 正確的列表框？ keepgoing == false？ Backgroundworker開始了嗎？