此链接将帮助您编写代码-

http://www.digitalcoding.com/Code-Snippets/VB/Visual-Basic-Code-Snippet-Check-Record-Exists-in-SQL-Server-Database.html

This link will help you to code-

http://www.digitalcoding.com/Code-Snippets/VB/Visual-Basic-Code-Snippet-Check-Record-Exists-in-SQL-Server-Database.html