Hi,
Try these:
http://resources.arcgis.com/en/help/arcobjects-net/componenthelp/index.html#//00490000000n000000
and
http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#//0001000004s2000000
Since your a lot more familiar with your project than I am, I'll let you look through those to pick out what you might need perhaps.
Maybe someone more advanced will provide you with more specifics, but this might be a good starting point.
Cheers,
thnx for the help. i used the first link http://resources.arcgis.com/en/help/arcobjects-net/componenthelp/index.html#//00490000000n000000 . it works for me however it displays a dialoge box showing the selected attribute from the table , i wish to save those value in some variable to use it further in program. any suggestion.
regards
nadeem