How to create file and return it via FileResult in ASP.NET MVC?

I have to create and return file in my aplication ASP.net MVC aplication. The file type should be normal .txt file. I know that i can return FileResult but i don't know how to use it.

public FilePathResult GetFile()
{
string name = "me.txt";

FileInfo info = new FileInfo(name);
if (!info.Exists)
{
    using (StreamWriter writer = info.CreateText())
    {
        writer.WriteLine("Hello, I am a new text file");

    }
}

return File(name, "text/plain");
}

This code doesn't work. Why? How to do it with stream result?