hi,
i m rajasavi.have just studied learning VB.net and need some help .i m making small window application using database about getting verfiying password before entering the other page.but my problem how to apply the constraint that only 1 user should have same name..should i use the constarint in database or should is there anyway of checking this in aplication code.

also help me out of hw to use ILDASM as it gives error...