Downloading Files with WebClient

See more:

C#

Hy there I have a wierd problem while downloading files from an URL with the WebClient:

WebClient wb = new WebClient();

            string url = txtURL.Text;
            string path = txtPath.Text;
            wb.DownloadStringAsync(new Uri(url),(path));

Here I determine the path(wich does exist) and the file name, I have some Event Handlers so I know when the file is completely download, what happens is tha it finishes downloadin it but the event isn´t called and the file isn´t in the file path specified_it doesn´t download it or it doesn´t save it?

What did I did wrong?
Please help