When Rebuild this website warining this error ?

[User 2456424]

When I Rebuild the error below, how to fix and fix errors ? Warning 1 The type 'webapp4U.UI.Controls.Controls_MenuLeft' in 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\website2010\e7f1df91\85da5ad5\App_Web_2oy154p1.0.cs' conflicts with the imported type 'webapp4U.UI.Controls.Controls_MenuLeft' in 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\website2010\e7f1df91\85da5ad5\App_Web_kgvuexfr.dll'. Using the type defined in 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\website2010\e7f1df91\85da5ad5\App_Web_2oy154p1.0.cs'. c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\website2010\e7f1df91\85da5ad5\App_Web_2oy154p1.0.cs

[Lost User]

The message is self explanatory; you have two versions of the Controls_MenuLeft class, and the system has to decide which one to choose, which may not be what you want.

[User 2456424]

My problem is how do you solve this problem ?

[Lost User]

Remove the duplicate class from your project.

[User 2456424]

It's not duplicate class from your project. It's only one

[Lost User]

It is not my project. And there is a definite duplicate as shown in the error messages, so you need to find out why, and remove one of them.

[User 2456424]

I will send the sample to you to see, see the attached file [WebSite2010](http://www.mediafire.com/file/k4q5t9dxo6ov833/WebSite2010.rar/file)