Download a folder to your computer

Question

In C# to download a file use the code:

using System.Net;
void Baixar(string url, string saida)
{
    WebClient wc=new WebClient();
    wc.DownloadFileAsync(new Uri(url), saida);
}

So far I haven’t found any well explained code regarding downloading folders from a server.

O.B.S.: When using this same code the application does not report any effect and the location where should download the files remains the same.