Background worker and datagridview in visual basic

Hi I've been struggling to understand how this works for ages. I've read loads of examples but I don't seem to get anywhere with it.

I am trying to get a datagridview to requery on a timer. I want this to run on a background worker so it doesn't kill the program when it query's

Here is a my code:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.NewJobsTableAdapter.Fill(Me.Report_databaseDataSet.NewJobs)
End Sub

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

Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Me.BackgroundWorker1.RunWorkerAsync()
End Sub

Private Sub BackgroundWorker1_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BackgroundWorker1.RunWorkerCompleted
LoadData()
End Sub

Private Sub LoadData()
Me.DataGridView9.DataSource = DBNull.Value
Me.DataGridView9.DataSource = NewJobsRedBindingSource
Me.NewJobsTableAdapter.Fill(Me.Report_databaseDataSet.NewJobs)
End Sub

I am not sure what to put in the dowork event. I just seem to get an error about unsafe threading. Any help in getting this to work would be greatly appreciated