背景工人重复dowork？

问题描述

任何人都可以通过科学计算器上的主要按钮检查器看到我的错误。后台工作人员似乎一遍又一遍地重复dowork部分，因为我在每个消息框中单击确定出现，另一个在
关闭之后直接上升，并且每个消息框关闭时进度条上升1％或更少...我已经摆弄它，但不能让它工作:(谢谢是提前....

hi can anyone see what I am doing wrong with some code from my prime button checker on my scientific calculator. the backgroundworker seems to repeat the dowork section over and over as I click ok in each messagebox comes up, another comes straight up after that one closes, and the progressbar goes up 1% or less with each messagebox closed... ive fiddled around with it but cant get it to work :( thanks is advance....

public static class PrimeTool
 {
     public static bool IsPrime(int primes)
     {
         // Test whether the parameter is a prime number.
         if ((primes & 1) == 0)
         {
             if (primes == 2)
             {
                 MessageBox.Show(primes + " Is Prime!");

            }
             else
             {
                 MessageBox.Show(primes + " Is Not Prime!");
             }
         }

        for (int k = 3;
             (k * k) <= primes; k += 2)
         {
             if ((primes % k) == 0)
             {
                 MessageBox.Show(primes + " Is Not Prime!");
             }
         }
         return false;
     }
 }


private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
 {
     BackgroundWorker worker = sender as BackgroundWorker;
     for (int i = 1; (i <= 100); i++)
     {
         primes = Convert.ToInt32(textBox1.Text);
         primes = int.Parse(textBox1.Text);
         PrimeTool.IsPrime(primes);
         backgroundWorker1.ReportProgress(i);
     }
 }
 private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
 {
     progressBar1.Value = e.ProgressPercentage;
     DateTime start = DateTime.Now;
     TimeSpan timespent = DateTime.Now - start;
     int timeleft = (timespent.Milliseconds / progressBar1.Value * (progressBar1.Maximum - progressBar1.Value));;
     textBox4.Text = progressBar1.Value.ToString();
     textBox3.Text = timeleft.ToString();
 }

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