How to wait correctly until BackgroundWorker completes?

Question

Observe the following piece of code:

var handler = GetTheRightHandler();
var bw = new BackgroundWorker();
bw.RunWorkerCompleted += OnAsyncOperationCompleted;         


        

Answer 1

This question is old but I don't think the author got the answer he was looking for.

This is a bit dirty, and it's in vb.NET but works for me

Private Sub MultiTaskingForThePoor()
    Try
        'Start background worker
        bgwAsyncTasks.RunWorkerAsync()
        'Do some other stuff here
        For i as integer = 0 to 100
            lblOutput.Text = cstr(i)
        Next

        'Wait for Background worker
        While bgwAsyncTasks.isBusy()
            Windows.Forms.Application.DoEvents()
        End While

        'Voila, we are back in sync
        lblOutput.Text = "Success!"
    Catch ex As Exception
        MsgBox("Oops!" & vbcrlf & ex.Message)
    End Try
End Sub