ChartSeriesItem PenStyle?

I am building a lined chart and have the LineSeriesAppearance.PenStyle set to "solid" for the series, but would like to change it to "dot" at the end of the series to signify the values occur outside of a threshold.  Is this possible?  For example:

Value 1: solid
Value 2: solid
Value 3: solid
[threshold hit]
Value 4: dot
Value 5: dot

Hello Dave,

To be able to control the appearance of a line terminating shape you should use the Cap property as shown in this help topic.
However have in mind that one Line can't have different PenStyles - this means that you can't set part of it (connecting first 3 points) to be dashed and the other solid.

Kind regards,
Evgenia
the Telerik team