自定义asp.net2.0权限提供程序SqlMembershipProvider

   cmd.CommandType = CommandType.StoredProcedure;
                    cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName));
                    cmd.Parameters.Add(CreateInputParam("@UserName", SqlDbType.NVarChar, username));
                    cmd.Parameters.Add(CreateInputParam("@Password", SqlDbType.NVarChar, pass));
                    cmd.Parameters.Add(CreateInputParam("@PasswordSalt", SqlDbType.NVarChar, salt));
                    cmd.Parameters.Add(CreateInputParam("@Email", SqlDbType.NVarChar, email));
                    cmd.Parameters.Add(CreateInputParam("@PasswordQuestion", SqlDbType.NVarChar, passwordQuestion));
                    cmd.Parameters.Add(CreateInputParam("@PasswordAnswer", SqlDbType.NVarChar, encodedPasswordAnswer));
                    cmd.Parameters.Add(CreateInputParam("@IsApproved", SqlDbType.Bit, isApproved));
                    cmd.Parameters.Add(CreateInputParam("@UniqueEmail", SqlDbType.Int, RequiresUniqueEmail ? 1 : 0));
                    cmd.Parameters.Add(CreateInputParam("@PasswordFormat", SqlDbType.Int, (int)PasswordFormat));
                    cmd.Parameters.Add(CreateInputParam("@CurrentTimeUtc", SqlDbType.DateTime, dt));
                    SqlParameter p = CreateInputParam("@UserId", SqlDbType.UniqueIdentifier, providerUserKey);
                    p.Direction= ParameterDirection.InputOutput;
                    cmd.Parameters.Add( p );

                    p = new SqlParameter("@ReturnValue", SqlDbType.Int);