Question

I have the following code that adds a background worker into a VB.net WPF project:

Imports System Imports System.ComponentModel Imports System.ComponentModel.BackgroundWorker Imports System.IO Imports System.Threading Imports System.Net Imports System.Windows Imports System.Windows.Controls Imports System.Windows.Data Imports System.Windows.Media Imports System.Windows.Media.Animation Imports System.Windows.Navigation Imports System.ServiceProcess Partial Public Class Window1 Public Sub New()     MyBase.New()     Me.InitializeComponent()     End Sub End Class Public Class Window1 Dim worker As New BackgroundWorker Private Sub worker_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.BackgroundWorker) Handles worker.DoWork     End Sub End Class 

And I get the following error for the DoWork worker event:

Handles clause requires a WithEvents variable defined in the containing type or one of its base types.

It seems like it’s missing something in the Event declaration, but can’t find it.

Any ideas?

Answer 1

The signature of your DoWork event looks funky – shouldn’t it be (Object, DoWorkEventArgs).

You have (Object, BackgroundWorker)