Constant lines
Like bands, ConstantLine can be considered as a series. ConstantLine is bound to Y axis, and it represents one horizontal line, ranging from graph left edge to right edge. Set the level via Value property. Constant lines can be vertically moved by dragging with mouse. By setting Behind property true, the constant line is drawn behind line and bar series, otherwise it is drawn in front of them.
When ConstantLine is dragged/moved the ValueChanged event is raised. If an application is subscribing to this event, then event handler could be used append any additional functionality to the chart. To prevent interaction with band the AllowUserInteraction property should be disabled.
Some constant lines around a sine line series.
To see feature demonstration as example, check Oscilloscope, Lissajous monitor, Signal reader and ExampleTradingMultiSegment from our Demo.