I'm developing a multilingual web site and the localization is done mostly by using .resx files. But now I need to enable users with some permissions to edit resource files online from the web site. Does anyone know of any existing component to help achieve this?
Best thing you can do is move to a DB driven approach.
Rick Strahl has this excellent article: Creating a Data Driven ASP.NET Localization Resource Provider and Editor with free source code!
It even has a Import feature so you don't have to re-translate the work done so far.
Edit: if you insist on editing the XML files, this article may help: Updatable ASP.NET ResX Resource Provider – yes, it’s possible!