C# Winform 进度条

BackgroundWorker可在后台执行任务，不影响主线程任务

Winform配置

向Winform内拖拽ProgressBar控件progressBar1

向Winform内拖拽BackgroundWorker组件backgroundWorker1

过程处理

向backgroundWorker1添加三个事件

　　　　 private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;

            for (int i = 1; i <= 10; i++)
            {
                if (worker.CancellationPending)
                {
                    e.Cancel = true;
                    break;
                }
                else
                {
                    // Perform a time consuming operation and report progress.
                    System.Threading.Thread.Sleep(300);
                    worker.ReportProgress(i * 10);
                }
            }
        }

        private void backgroundWorker1_ProgressChanged(object sender, System.ComponentModel.ProgressChangedEventArgs e)
        {
            this.progressBar1.Value = e.ProgressPercentage;
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e)
        {
            this.Visible = false;
        }

 

初始化backgroundWorker1配置

            backgroundWorker1.WorkerReportsProgress = true;
            backgroundWorker1.WorkerSupportsCancellation = true;

 

执行、取消

            if (!backgroundWorker1.IsBusy)
            {
                // Start the asynchronous operation.
                backgroundWorker1.RunWorkerAsync();
            }

            if (backgroundWorker1.WorkerSupportsCancellation)
            {
                // Cancel the asynchronous operation.
                backgroundWorker1.CancelAsync();
            }