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.

Answer 3

Change your master page's name to something other than Project . as your project's name as well as you master page are name Project . It is creating conflict.