Retrieve the current username for an FBA user in IP2010

have to use fully trusted forms...might as well use administrator approved forms as well so you dont have to mess with certificates...and use some code like this:

int index = 0;
userName = (this.Application.User.LoginName);
if (userName.Contains("sqlmembershipprovider"))

{
index = userName.IndexOf("sqlmembershipprovider|") + 22;
userName = userName.Substring(index, userName.Length - index);
}