How to use MembershipCreateStatus in a class

I'm trying to use the .NET membership provider but I don't know how.

There is my code:

using System;
using System.Web;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web.Security;
using System.Collections.Specialized;
using System.Data.SqlClient;
using System.Web.Security.SqlMembershipProvider;

namespace CustomMembership
{
    public class CustomMembership
    {
        public static void Crea开发者_开发知识库teUser(String UserName, String Password, String Email, out MembershipCreateStatus  Result)
        {
            SqlConnection Conn= new SqlConnection(@"Data Source=A-PC\SQLEXPRESS;Initial Catalog=OyunSitesi;User ID=XXX;Password=XXX");

            Conn.Open();

            SqlCommand CreateUserCommand= new SqlCommand("Inser Into Uyeler (UyeKullaniciAdi,UyeSifre,UyeEposta,UyeGrubu) Values('"+KullaniciAdi+"','"+Sifresi+"','"+EpostaAdresi+"')",Conn);
            CreateUserCommand.ExecuteNonQuery();

And code continues...

My problem is this code returns The type or namespace name "MembershipCreateStatus" could not be found (Are you missing a using directive or an assembly reference?).

How can I fix this?

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Add reference to the Assembly System.Web.ApplicationServices. It should do the trick.

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Is this .NET 4.0? System.Web in .NET 4.0 does not seem to have this class definition, have you imported it from an earlier version? Edit: removed dumbness, sorry.