my topic is realted to c# and inserting the data.

Question

iam inserting 3 data from gried view that is the id tat is primary key for first table , name and comment. and iam insertin this data from gried view in secod table and in the second table the id( tat is primary key for frst table) tat store in the second table as foregin key. and when iam insertin data i can insert same data as 5 time if iam going to insert 6 time i hav to got the error