[C#] C#並發編程-非同步編程基礎-報告進度

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 1     int ProgressRate = 0; 2  3     private async void btnProgress_Click(object sender, EventArgs e) 4     { 5         ProgressRate = 0; 6  7         var progress = new Progress<int>(); 8  9         //progress的進度改變10         progress.ProgressChanged += (obj1, obj2) =>11         {12             if (ProgressRate <= 100)13             {14                 this.lblProgress.Content = ProgressRate.ToString() + "%";15                 this.pbProgress.Value = ProgressRate;16             }17             else18             {19                 this.btnProgress.IsEnabled = true;20             }21 22         };23 24         this.btnProgress.IsEnabled = false;25         await ReportProgressAsync(progress);26     }27 28     //在此報告progress的進度，更改ProgressRate的值29     private async Task ReportProgressAsync(IProgress<int> progress = null)30     {31         while (ProgressRate <= 100)32         {33             if (progress != null)34             {35                 await Task.Delay(TimeSpan.FromMilliseconds(100));36                 progress.Report(ProgressRate++);37             }38         }39     }

結果：

[C#] C#並發編程-非同步編程基礎-報告進度