I try to make my application multilingual. For this I have created two resource files:

• Resource.de-DE.resx
• Resource.en-US.resx

Both are set to public and contain the same keyword and translation. I can also access the keywords in the backend -> see image. Unfortunately my program does not load the files when I change the language.
My steps:

1. set the default Resources.resx to public.
2. copied this file twice
3. renamed file to (see above)
4. keywords+translation entered and checked
5. project created again
6. included on the Button-Content by:

<Button x:Name="Home_Button" Style="{DynamicResource Menuebutton}"  Content="{x:Static p:Resources.Menue_home}" Click="Home_Click"/>

1. access of the object set by:

xmlns:p="clr-namespace:VS_Launcher.Properties"

1. include in the MainWindow.xaml.cs by:

CultureInfo myCultureInfo = new CultureInfo("en-US");
CultureInfo.DefaultThreadCurrentCulture = myCultureInfo;
CultureInfo.DefaultThreadCurrentUICulture = myCultureInfo;
Thread.CurrentThread.CurrentCulture = myCultureInfo;
Thread.CurrentThread.CurrentUICulture = myCultureInfo;

In another project I did the same thing. But there the solution worked. What is my error?
Resource FilesDirectory structure