Problem accessing a Resource by my C # class [closed]

The problem is in a project I'm doing I added 2 main.resx features I want to get data inside this Resource like this:

    System.Resources.ResourceManager rm = new ResourceManager(typeof(System.Resources_example.Main));

I have the Main.resx feature in my project but I can not access it in System.Resources_example.Main in that part of the code that causes the error Visual Studio does not recognize the Main.resx