关于进度条大小（幅度） [英] Regarding progress bar size(magnitude)

问题描述

有没有办法在后台进程中使用它来指定进度条的最小值和最大值？

Is there a way to specify the minimum and maximum value of progressbar while using it through backgroundprocess?

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
     {

         int[] arr = new int[21];
         for (int i = 1; i <= 20; i++)
         {
             arr[i] = i;
             Thread.Sleep(100);
             int m = (int)((1* 100)/arr.Length);
             backgroundWorker1.ReportProgress(i*m);
         }
     }

我正在使用上面的代码和它不做这个工作..进度条永远不会达到100％，因为我只是在进行类型转换。我想将进度条的最大值设置为（arr.length），这样就不需要进行类型转换。请帮助。

I'm using the above code and it does not do the job.. The progress bar never reaches 100% as I'm just typecasting. I want to set the maximum value of progress bar to (arr.length) so that there's no need to typecast. Please help.

推荐答案

请参阅链接：

http://msdn.microsoft.com/en-us/library/system.windows.forms.progressbar.maximum(v = vs.110）.aspx [ ^ ]

为什么用数组索引处理这种方式？我会这样写：

Why are dealing that way with the array indices? I would have writeen it this way:

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
     {
         int[] arr = new int[20];
         double d = 100.0 / arr.Length;
         for (int i = 0; i < arr.Length; i++)
         {
             arr[i] = (i+1);
             Thread.Sleep(100);
             int p = (int) Math.Round((i+1)* d);
             backgroundWorker1.ReportProgress(p);
         }
     }

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