Good question, actually, you may build your web application and use VB than C#. if you are working on the K2 SmartObject or K2 Workflow Projects, there are no coding(C#/VB) need.
Regards
Ken Lin, Kam Hung
Founder and VP of Hong Kong .NET User Group(http://HKNetUG.com)
MCP, MCP+I, MCDST, MCSA, MCSE, MCITP
MCSE+I, MCDBA, MCSD, MCAD
Microsoft Community Star(Hong Kong & Taiwan)
Microsoft Most Valuable Professional(.NET since 2003)
MCT2004 - 2008