The type or namespace name 'User' could not be found (are you missing a using directive or an assembly reference?)

Question

I have created a website from File->new-> Web Site. i am trying to go to mydomain.com/piro/admin/login.aspx i have created a class named User.cs, this class is in the App_Code folder. when i run this web site locally, everything works fine, but when i move my files to the server i get the error on the User type. i tried to deploy my website, to copy my website, to create new on ftp website but nothing works, i have searched for a solution, but couldn't find any answer for my problem. can any one please help..! here is my code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;

public partial class admin_login : System.Web.UI.Page
{
 protected void Page_Load(object sender, EventArgs e)
{
    Label1.Text = "";
}
protected void Button1_Click(object sender, EventArgs e)
{
    User user = new User();
    user.username = txtUsername.Text;
    user.password = txtPassword.Text;

    User login = loggInn(user);
    if (login == null)
    {
        Label1.Text = "User name or password is wrong";
    }
    else
    {
        Session["userName"] = user.username;
        Session["lastvisit"] = login.lastvisit;
        Session["systemUser"] = login.role;
        // Session["rolle"] = godkjent.rolle;
        Response.Redirect("Default.aspx");
    }
    //string loggInn = checkUserLinq(user);

    // string check = checkUser(user);
}

public byte[] pass(string inn)
{
    var algoritme = System.Security.Cryptography.SHA1.Create();
    byte[] data, utdata;
    data = System.Text.Encoding.ASCII.GetBytes(inn);
    utdata = algoritme.ComputeHash(data);
    return utdata;
}
public User loggInn(User inn)
{
    using (var db = new DataClassesDataContext())
    {
        byte[] passordArray;
        passordArray = pass(inn.password);
        try
        {
            var brukere = from s in db.TUsers
                          where s.Username == inn.username &&
                           s.Password == passordArray
                          select new User
                          {
                              username = s.Username,
                              email = s.Email,
                              role = s.Role,
                              lastvisit = Convert.ToDateTime(s.Lastvisit)
                          };
            if (brukere.Count() == 0 || brukere == null)
            {
                return null;
            }

            User user = brukere.First();

            char[] x = inn.username.ToCharArray();
            int a = x.Length;
            char[] y = user.username.ToCharArray();
            for (int i = 0; i < x.Length; i++)
            {
                if (!y[i].Equals(x[i]))
                    return null;
            }
            return user;
        }
        catch (Exception err)
        {
            return null;
        }
    }
}
}

my web.config

<?xml version="1.0"?>
<configuration>
  <connectionStrings>
    <add name="testdbConnectionString" connectionString="Data     Source=tcp:myhost.com;Initial Catalog=testdb;User ID=testdb_user;Password=*****"
  providerName="System.Data.SqlClient" />
  </connectionStrings>
  <system.web>
    <compilation debug="false" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
   </assemblies>
  </compilation>
  </system.web>
</configuration>

score 1 · Accepted Answer · edited Jan 23 '12 at 16:37

Now it is working fine. Here I write what I did in case someone faces the same problem.

Right click on solution and add new project-> classlibrary (name it whatevr you want).
Add the classes to the classlibrary.
Right click on the website and go to addreferences, select the classlibrary you just created.
Add using classlibrary on the top of the .cs files.
Build the solution.
Move/copy the bin folder to the root directory.

I think it is very complicated when uploading the website to server; everything works fine locally. After much work locally things gets hard when uploading to server!

score 0 · Answer 2 · answered Jan 21 '12 at 14:42

0

Is the User class part of the same namespace as your admin_login class? If they are not, then you need to add an additional using YourUserClassNamespace; at the top.

answered Jan 21 '12 at 14:42

1

User.cs is in the App_Code folder. the App_Code folder is in the root directory the same as the admin folder is. I tried to move the login.aspx file to the same level as the App_Code folder, didn't help. – kamiran Jan 21 '12 at 14:46
@kamiran are you sure you've moved all of the files and folder structure? The `App_Code` folder and contents are compiled at runtime. – Jan 21 '12 at 14:52
i am sure that i have moved the files, what i have read about compilation, that asp.net compiles the files that are located in the app_code folder. i have moved my files several times, trying once the deploy website, once the copy website, once using filezilla and create the files on server. no one works. :( – kamiran Jan 21 '12 at 14:57
@kamiran could you move your `User` class outside of the `App_Code` folder, recompile and try again? – Jan 21 '12 at 15:15
i moved as you suggest, but didn't work. i clicked on Build->Build Web Site. and Build->Build Solution. – kamiran Jan 21 '12 at 15:31

The type or namespace name 'User' could not be found (are you missing a using directive or an assembly reference?)

2 Answers2

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