How to make some AxisY's MajorTicks invisible,but some visible?

[PEIYANG]

How to make some AxisY's   MajorTicks invisible,but some  visible?
https://www.yousendit.com/download/WUJZeUNPUzdrWThQWWNUQw
In the link picture,I want to make the axisY's scale 5,10  visible, ant 15,25,..50 invisible,I have remove the number,but the line scale(tick mark) in the circle can not remove ,How can I remove it?

[Evgenia]

Hello Peiyang,

 You may find attached a sample project that demonstrates how you may achieve this via Converter set in the TickLineStyle of the XAxis.
Feel free to modify it per your own needs.

Greetings,
Evgenia
the Telerik team

[PEIYANG]

Thank you!