To rename resource
  1. Position the caret at the name of resource in code file:
    Resources__Refactorings__Rename_Resource_01
    or in .resx file:
    Resources__Refactorings__Rename_Resource_03
  2. On the main menu, choose ReSharper | Refactor | Rename or press F2. The Rename Resource dialog box opens:
    Resources__Refactorings__Rename_Resource_02
  3. In the Name text box, specify a new name for resource.
  4. Click Next to apply refactoring