Raspbian vnc server autostart

[Bernard Lee]

😊Dear Debian,
I'm Bernard.I have a little problem with my raspberry pi 2 running Raspbian
Jessie.
Hope you can help me.I don't know how to set my pi turn on the vnc server
when boot.
I don't  know  how  to  set the bootconfig.txt. please tell me how to
fix it when you reply.i'm
from Hong Kong.
Yours,
Lee Tsz Wo Bernard