Vim and ctags, C# code navigation

[Arun]

Hello Listmates,
I am using ctags to navigate C# code, facing a few issues
here:

a. If a tag is defined in two classes, using C-] moves me to the
definition of the tag that appears first in the "tags" file. It
seems vim doesn't make use of the namespace/class info.
My ctags commandline:
"ctags --recurse --extra=+fq --fields=+ianmzS --c\#-kinds=cimnp ."

Is this an issue with VIM not using the tag info? Any plugins that
can help me?

b. Similar issue for tag autocomplete, I get a list of all tags in my
"tags" files when I try C-X C-], though I would like to get
identifiers related to the particular class.

c. A related question. Can anyone comment on cscope for c#/java? Does
it allow to search for tokens w/ namespace/class context?

Appreciate any help here.

Thanks,
Arun