SqlString in c#

Question

I just found in some code that it uses System.Data.SqlTypes.SqlString? I haven't seen it used before. Am I always supposed to use this when sending a string to sql server?

e.g.

cmd.Parameters.Add("@FirstName", (SqlString)FirstName);

Answer 1

No, it's fine - you can just use string and the framework/driver will take care of things for you.