Private toolBarButton1 As Xceed.Chart.UIControls.ToolBarButton
Private Sub Form1_Load( ByVal sender As Object, ByVal e As EventArgs)
  ' create the button
  toolBarButton1 = New Xceed.Chart.UIControls.ToolBarButton()
  
  ' create an icon for the button in the toolbar image list
  ' 1. assume that there is an icon called Custom.ico in the startup directory
  Dim ico As New Icon(Application.StartupPath + "\Custom.ico")
  chartToolbarControl1.ImageList.Images.Add( ico )
  
  ' assign it to the toolbar button
  toolBarButton1.ImageIndex = chartToolbarControl1.ImageList.Images.Count - 1
  
  ' add the button directly in the Buttons collection inherited from ToolBar
  'chartToolbarControl1.Buttons.Add( toolBarButton1 );
End Sub

private Xceed.Chart.UIControls.ToolBarButton toolBarButton1;
private void Form1_Load( object sender, EventArgs e )
{
  // create the button
  toolBarButton1 = new Xceed.Chart.UIControls.ToolBarButton();
  
  // create an icon for the button in the toolbar image list
  // 1. assume that there is an icon called Custom.ico in the startup directory
  Icon ico = new Icon(Application.StartupPath + "\\Custom.ico");
  chartToolbarControl1.ImageList.Images.Add( ico );
  
  // assign it to the toolbar button
  toolBarButton1.ImageIndex = chartToolbarControl1.ImageList.Images.Count - 1;
  
  // add the button directly in the Buttons collection inherited from ToolBar
  //chartToolbarControl1.Buttons.Add( toolBarButton1 );
}