private void UpdateDisplayedExtents(ChartExtents extents)
{
RectangleF e = extents.PrimaryExtents;
lblZoomExtents.Text = string.Format(ZoomChangedDisplayFormatLeftRightTopBottom,
e.Left, e.Right, e.Top, e.Bottom);
}
private void btnViewChartExtents_ButtonClick(object sender, EventArgs e)
{
ChartExtents all = chart1.GetBoundariesOfData();
ChartExtents visible = chart1.GetBoundariesOfVisibleData();
const string fmt = @"All data
{0}
Visible data
{1}";
MessageBox.Show(string.Format(fmt, all, visible), "Extents/boundaries of the data");
}