Error in Masterpage, namespace already exists

Question

I want to add some code into my masterpage. So I removed the namespace but when I want to test it it gives this error. No idea how to fix this.

Error 2 The namespace 'Project' in 'c:\Users\Test\AppData\Local\Temp\Temporary ASP.NET Files\project\fe95a550\6aff5a12\assembly\dl3\9f54421a\e011b011_23bccd01\Project.DLL' conflicts with the type 'Project' in 'c:\Users\Test\AppData\Local\Temp\Temporary ASP.NET Files\project\fe95a550\6aff5a12\App_Web_exfemb4u.dll' c:\Users\Test\AppData\Local\Temp\Temporary ASP.NET Files\project\fe95a550\6aff5a12\App_Web_hrdlxq5l.4.cs 154

Masterpage.cs

public partial class Project: System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

Masterpage

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Project.master.cs" Inherits="Project" %>

Answer 1

Can you add a namespace before public partial ....

namespace Test
{
    public partial class MovieMeter : System.Web.UI.MasterPage
    {
         protected void Page_Load(object sender, EventArgs e)
         {
         }
    }
}

Why did you remove the namespace ? please add one.

Answer 2

Replace:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Project.master.cs" Inherits="Project" %>

With:

<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Project.master.cs" Inherits="Project" %>

It might solve...

Then the reason for the error is due to the way these two attributes are handled:

CodeBehind: Needs to be compiled before being deployed and the compiled assembly is put in the bin folder of your website.

CodeFile: You deploy the source and it is compiled as it is needed. The compiled assembly is placed in the Temporary ASP.NET folder.