Copy only particular extension files from one folder to another in C#

This way

        string[] files = Directory.GetFiles(Server.MapPath("~/Folder1/"), "*.doc");
        foreach(string file in files)
        {
            File.Copy(file, Server.MapPath("~/Folder2/") + Path.GetFileName(file));
        }

        files = Directory.GetFiles(Server.MapPath("~/Folder1/"), "*.docx");
        foreach (string file in files)
        {
            File.Copy(file, Server.MapPath("~/Folder2/") + Path.GetFileName(file));
        }