grid View with Sql server

Question

Hi

 

I have created two tables Category(C_ID, C_Name) and Sub_category (S_ID,S_Name,C_ID[fk])

I have dispyed the data in the gridview using sql server configuration with enabled edit and delete  options  

Edit is working properly but when I try to delete the row it show Error message

 

The DELETE statement conflicted with the REFERENCE constraint "FK__sub_catego__C_ID__60083D91". The conflict occurred in database "master", table "dbo.sub_category", column 'C_ID'.
The statement has been terminated.

Kindly help me in solving this problem.

 

Thanks

Kritika