How to fix “namespace x already contains a definition for x” error? Happened after converting to VS2010

Question

Specifically the error occurs in the Resources.Designer.cs:

Error 2 The namespace \'ModulusFE\' already contains a definition for \'Sto

Answer 1

if you have 2 versions of any of your code file (*.cs, *.vb etc.) inside your "app_code" folder then you will get this error because dot net would include both the files in your project and will get 2 different implementations of the same class (because of same name in 2 versions of same code file in app_code folder)

Answer 2

I've had this problem, too, and it was because I created a new namespace, but the parent namespace contained a class with the same name.

Answer 3

Me too got this error, When I change my WPF project's Target Framework to Framework Version 4.0 Client Profile -> Framework 4.0. It's solved by itself.

Answer 4

I had an xaml file with the following definition

<Window x:Class="mm2.Views"
   .etc..
/>

mm2.Views was the name of a namespace in my app.

To fix it, I correctly renamed the xaml object:

<Window x:Class="mm2.Views.RecordedTracks"
   .etc..
/>

Answer 5

I had a similar problem (Universal project, Visual Studio 2015), I solved it with the following changes:

In App.xml.cs was (it was ok):

namespace Test.Main {

Wrong, old version of App.xml:

x:Class="Test.Main"

Good, new version of App.xml:

x:Class="Test.Main.App"

Answer 6

Looks like a bug in VS code's OmniSharp.

Solution for me was to execute command "Restart OmniSharp".

Just do: - ctr shift P - type "Restart OmniSharp" .. hit enter

This fixed it for me.