Rename a file in C#

Question

How do I rename a file using C#?

Answer 1

  public static class ImageRename
    {
        public static void ApplyChanges(string fileUrl,
                                        string temporaryImageName, 
                                        string permanentImageName)
        {               
                var currentFileName = Path.Combine(fileUrl, 
                                                   temporaryImageName);

                if (!File.Exists(currentFileName))
                    throw new FileNotFoundException();

                var extention = Path.GetExtension(temporaryImageName);
                var newFileName = Path.Combine(fileUrl, 
                                            $"{permanentImageName}
                                              {extention}");

                if (File.Exists(newFileName))
                    File.Delete(newFileName);

                File.Move(currentFileName, newFileName);               
        }
    }