Average Devexpress ChartControl display lines (vertical x-axis and y-axis perpendicular to a straight line)

How DevExpress ChartControl vertical axis Y perpendicular to the X-axis and a straight line display,
for example, shown below.

1, the code following manner:

XYDiagram diagram = (XYDiagram)chartControl1.Diagram;
diagram.AxisY.ConstantLines.Clear();           
ConstantLine constantLine1 = new ConstantLine("最低保障工资：3500", 3500);
constantLine1.Color = Color.Red; //直线颜色
constantLine1.Title.TextColor = Color.Red;   //直线文本字体颜色      
diagram.AxisY.ConstantLines.Add(constantLine1);
ConstantLine constantLine2 = new ConstantLine("平均工资：8500", 8500);
constantLine2.Color = Color.Green;
constantLine2.Title.TextColor = Color.Green;
diagram.AxisY.ConstantLines.Add(constantLine2);

2, implemented using the design settings:

Of course, this is generally AxisValue dynamically calculated set.