TFS edit build log using custom activity

Question

in TFS while we fire a build. the build log is generated with all the details. like testcases result, code analysis etc...

if want to add some more details in build log. how to do that. i mean which API need to be used to edit build log from custom activity.

please provide me some article links if possible.

Answer 1

Check this post by E.Hofman

Answer 2

These build customization articles should be useful for you (part1, part2). There is one example about adding a message into build log.