您需要创建BackgroundWorker.ReportProgress事件的实例.然后使用该方法更新进度条.

You need to create an instance of the BackgroundWorker.ReportProgress event. Then update the progress bar in that method.

BackgroundWorker.ReportProgress += new ReportProgressEventHandler()....

(语法可能不正确，但是您了解了)

(Syntax is probably incorrect, but you get the idea)