Using BackgroundWorker

Basic implementation of Background worker class

You need to import System.ComponentModel for using background worker

Imports System.ComponentModel

Then Declare a private variable

Private bgWorker As New BackgroundWorker

You need to create two methods for background worker’s DoWork and RunWorkerCompleted events and assign them.

Private Sub MyWorker_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs)
  'Add your codes here for the worker to execute

End Sub

The below sub will be executed when the worker finishes the job

Private Sub MyWorker_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs)
    'Add your codes for the worker to execute after finishing the work.

End Sub

Then within your code add the below lines to start the background worker

    bgWorker = New BackgroundWorker
    AddHandler bgWorker.DoWork, AddressOf MyWorker_DoWork
    AddHandler bgWorker.RunWorkerCompleted, AddressOf MyWorker_RunWorkerCompleted
    bgWorker.RunWorkerAsync()

When you call RunWorkerAsync() function, MyWorker_DoWork will be executed.