How To Make A Result In A Query(with Var.)

Oct 31, 2010

i need to make 2 funtions on an ASP.NET c# page working with an SQL server (using Visual Web Developer 2010 Express) the 1st one is a simple serach and i've done the 2nd thing is an update , the sp is like:(it works in SQL)

UPDATE [lens] SET [qty] = @b+@c WHERE [id] = @a

@a is the id which user input in the textbox1

@b is an number user input in the textbox2

now @c should be the result of an query "select [qty] from [lens] where [id] = @a"

so ,the new value of [qty] will be the "old valus"+"valus in textbox2"

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