How to: Search files from a certain directory with Progressbar + Backgroundworker

[ryanshane91]

Hello Everyone, Admin. I'm new to this Forum and i want to ask how to search files from a certain directory with progressbar & background worker? 

Code: (from the Admin-(Brandonio)) :
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Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        BackgroundWorker1.RunWorkerAsync()

    End Sub



    Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork

        Dim directory = "Path"
        Dim files() As System.IO.FileInfo
        Dim dirinfo As New System.IO.DirectoryInfo(directory)
        files = dirinfo.GetFiles("*", IO.SearchOption.AllDirectories)
        For Each file In files
            ListBox1.Items.Add(file)
        Next

    End Sub

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But whenever i click the button, i get an error saying : Cross-thread operation not valid: Control 'ListBox1' accessed from a thread other than the thread it was created on.
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I'm new in VB.NET and i'm making an application that cleans up the Temporary folder.
Thank you. and uh, i like this forum.