How to write a message to log file or console using extension method

here's my code

class Program
{
    static void Main(string[] args)
    {
        (from d in new DirectoryInfo("E:\\")
    .GetDirectories() select d.Name)
             .WriteToConsole(Logger.WriteToLog , true);
            //    .WriteToConsole(Console.WriteLine);
    }
}

public static class Logger
{
    public static void WriteToLog(dynamic data)
    {
        string filePath = string.Format("{0}\\log.txt", Environment.CurrentDirectory);
        var stream = File.Create(filePath);
        stream.Write(Encoding.UTF8.GetBytes(data), 0, Encoding.UTF8.GetByteCount(data));
        stream.Flush();
        stream.Close();
    }
}

public static class WriteExtensions
{
    public static void WriteToConsole<T1>(this IEnumerable<T1> data , Action<T1> action, bool carelist = false)
    {
        if (carelist)
        {
            // all i want is to invoke action by sending data rather than
    // one by one
            return;
        }
        foreach (var item in data)
        {
            action.Invoke(item);
        }
    }
}

problem is we can write to console line by line..but for writing to file i want to put all at once .. any help.. thanks