Rename a file in C#

Question

How do I rename a file using C#?

Answer 1

Just add:

namespace System.IO
{
    public static class FileInfoExtensions
    {
        public static void Rename(this FileInfo fileInfo, string newName)
        {
            fileInfo.MoveTo(Path.Combine(fileInfo.Directory.FullName, newName));
        }
    }
}

And then...

FileInfo file = new FileInfo("c:\test.txt");
file.Rename("test2.txt");