public string GetCSV(string url)
{
    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
    HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

    StreamReader sr = new StreamReader(resp.GetResponseStream());
    string results = sr.ReadToEnd();
    sr.Close();

    return results;
}

然后拆分它：

public static void SplitCSV()
{
    List<string> splitted = new List<string>();
    string fileList = getCSV("http://www.google.com");
    string[] tempStr;

    tempStr = fileList.Split(',');

    foreach (string item in tempStr)
    {
        if (!string.IsNullOrWhiteSpace(item))
        {
            splitted.Add(item);
        }
    }
}

虽然有很多的CSV解析器在那里,我建议不要滚动自己的. FileHelpers是一个很好的.