title: Generate sequential number with a prefix
body: <p>I need to assign a unique number to each "customer". Basically an account number or so to speak. I need to generate a sequential number with a prefix... say... 10001111 to eventually 19999999. The numbers need to be unique. I know how to create a random number but those numbers must be unique and can't be repeated so I am stuck with how to even begin with the programming logic. I found some C# that would help but I am programming in VB.NET. Any help would be appreciated!</p>