The ResourceManager.GetResourceFileName(System.Globalization.CultureInfo) method is useful only if you write your own class that derives from the System.Resources.ResourceManager class.

This method uses the System.Globalization.CultureInfo.Name property as part of the file name for all cultures other than the invariant culture. This method does not look in an assembly's manifest or touch the disk, and is used only to construct a resource file name (suitable for passing to the System.Resources.ResourceReader constructor) or a manifest resource blob name.

A derived class can override this method to look for a different extension, such as ".ResX", or a completely different scheme for naming resource files. Note that the method can be used to customize the name of a resource file within a satellite assembly, and not to customize the name of the satellite assembly itself.

Namespace: System.Resources
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0