About C#...?

Question

HOW CAN I APPLY RESTRICTION ABOUT A SOFTWARE,   THAT A USER CANNOT ENTER THE CNIC NO.  SAME? IF DATABASE HAS SAVED AN CNIC NO.  E.G, 35202-8756473-8 THAN NEW USER CANNOT SAVEED THE DATA WITH SAME CNIC.   WHAT IS THE CODE FOR THIS SENARIO ON VISUAL STUDIO C#...?

Bilawal Niaz · Answer

I DON'T UNDERSTAND,
CAN GIVE A BREIFE ANSWER...?

Sujeet Suman · Answer

Use primary key constrain  with column "CNIC NO" in your database.

Upendra Pratap Shahi · Answer

Hi,   http://www.codeproject.com/Articles/837599/Using-Csharp-to-connect-to-and-query-from-a-SQL-da

Rakesh · Answer

http://www.codeproject.com/Articles/837599/Using-Csharp-to-connect-to-and-query-from-a-SQL-da