CodeSnipps from C# convert to VB2005/2010

protected override void OnDropDown(System.EventArgs e){
   Form parent = this.FindForm();
   if(this.dataTable != null || this.dataRows!= null){
       MultiColumnComboPopup popup = new
                           MultiColumnComboPopup(this.dataTable,
                           ref this.selectedRow,columnsToDisplay);
       popup.AfterRowSelectEvent+=
                           new AfterRowSelectEventHandler
                           (MultiColumnComboBox_AfterSelectEvent);
       popup.Location = new Point(parent.Left +
                           this.Left + 4 ,parent.Top +
                           this.Bottom + this.Height);
       popup.Show();