BackgroundWorker.ReportProgress Method (Int32)
Raises the ProgressChanged event.
Assembly: System (in System.dll)
If you need the background operation to report on its progress, you can call the ReportProgress method to raise the ProgressChanged event. The WorkerReportsProgress property value must be true, or ReportProgress will throw an InvalidOperationException.
It is up to you to implement a meaningful way of measuring your background operation's progress as a percentage of the total task completed.
The following code example demonstrates the use of the ReportProgress method to report the progress of a background operation to the user. To view the complete code for this sample, see How to: Use a Background Worker.
Private Sub bw_DoWork(ByVal sender As Object, ByVal e As DoWorkEventArgs) Dim worker As BackgroundWorker = CType(sender, BackgroundWorker) For i = 1 To 10 If bw.CancellationPending = True Then e.Cancel = True Exit For Else ' Perform a time consuming operation and report progress. System.Threading.Thread.Sleep(500) bw.ReportProgress(i * 10) End If Next End Sub
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.