1. ChartArea collection
1. Axis, Axes collection
Abscissa name and horizontal axis interval
Horizontal axis min-max
Two, Series collection
Display the ordinate of the point
Legend name and chart type
3. Titles collection
chart name
4. Add points
chart1.Series["浊度"].Points.AddXY(zdx++, (int)f1 * 50 / 127);