Build error (The type or namespace name could not be found

EDN Admin · Jul 13, 2006

I am using VS.Net 2003. I have a solution that contains 4 projects. The first project contains the definitions of interfaces. The third project is using the interfaces defined in the first project. For the third project, I added a reference to the first project. But Im still getting a build error: 
c:inetpubwwwrootRemoting2Project3WebForm1.aspx.cs(28): The type or namespace name IAuthenticateUserService could not be found (are you missing a using directive or an assembly reference?).
Thanks in advance,
Elizabeth Bradley
-------------------------------------------------------------------
Interfaces.cs (in the first project named remoting2project1)
using System;
namespace Remoting2Project1
{
/// <summary>
/// Summary description for Class1.
/// </summary>
public interface IAuthenticateUserService
{
int AuthenticateUser(string username, string password);
}
public interface ICreateUserService
{
int CreateUser(string username, string password);
}
public interface IDeleteUserService
{
int DeleteUser(string username, string password);
}
public interface IUpdateUserService
{
int UpdateUser(string username, string password);
}
public interface ICreateGroupService
{
int CreateGroup(string groupname);
}

}
--------------------------------------------------------------------------
Webform1.aspx.cs (in the third project named remoting2project3)
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Messaging;
namespace Remoting2Project3
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
public delegate int MyDelegate(string s);
private void Page_Load(object sender, System.EventArgs e)
{
TcpChannel m_TcpChan = new TcpChannel();
ChannelServices.RegisterChannel(m_TcpChan);
IAuthenticateUserService m_RemoteObject = (IAuthenticateUserService)
Activator.GetObject(typeof(IAuthenticateUserService),
"tcp://localhost/remoting2project1"); 
MyDelegate m_delegate = 
new MyDelegate(m_RemoteObject.AuthenticateUser);
m_delegate.BeginInvoke("Amazing", 
new AsyncCallback(MyCallBack),null);
ICreateUserService m_RemoteObject2 = (ICreateUserService)
Activator.GetObject(typeof(ICreateUserService),
"tcp://localhost/remoting2project1"); 
MyDelegate m_delegate2 = 
new MyDelegate(m_RemoteObject.CreateUser);
m_delegate.BeginInvoke("Amazing", 
new AsyncCallback(MyCallBack),null);
IDeleteUserService m_RemoteObject = (IDeleteUserService)
Activator.GetObject(typeof(IDeleteUserService),
"tcp://localhost/remoting2project1"); 
MyDelegate m_delegate3 = 
new MyDelegate(m_RemoteObject.DeleteUser);
m_delegate.BeginInvoke("Amazing", 
new AsyncCallback(MyCallBack),null);
IUpdateUserService m_RemoteObject = (IUpdateUserService)
Activator.GetObject(typeof(IUpdateUserService),
"tcp://localhost/remoting2project1"); 
MyDelegate m_delegate4 = 
new MyDelegate(m_RemoteObject.UpdateUser);
m_delegate.BeginInvoke("Amazing", 
new AsyncCallback(MyCallBack),null);
ICreateGroupService m_RemoteObject = (ICreateGroupService)
Activator.GetObject(typeof(ICreateGroupService),
"tcp://localhost/remoting2project1"); 
MyDelegate m_delegate5 = 
new MyDelegate(m_RemoteObject.CreateGroup);
m_delegate.BeginInvoke("Amazing", 
new AsyncCallback(MyCallBack),null);
System.Console.WriteLine("Press ENTER to quit");
System.Console.ReadLine();
}
public static void MyCallBack(IAsyncResult ar)
{
int l = ((MyDelegate)((AsyncResult)ar).AsyncDelegate).EndInvoke(ar);
Console.WriteLine(l);
} 

#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{ 
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
}

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Build error (The type or namespace name could not be found

EDN Admin

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