C#并发编程-异步编程基础-报告进度
[C#] C#并发编程-异步编程基础-报告进度
时间：2017-03-06 14:37:56 阅读：374 评论：0 收藏：0
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的进度改变
10 progress.ProgressChanged += (obj1, obj2) =>
11 {
12 if (ProgressRate <= 100)
13 {
14 this.lblProgress.Content = ProgressRate.ToString() + "%";
15 this.pbProgress.Value = ProgressRate;
16 }
17 else
18 {
19 this.btnProgress.IsEnabled = true;
20 }
21
22 };
23
24 this.btnProgress.IsEnabled = false;
25 await ReportProgressAsync(progress);
26 }
27
28 //在此报告progress的进度，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 }
结果：
