功能实现：把远程服务器传回的Html，解析到类里面，为GridView等提供数据源。

1 、向远程服务器Post数据
public int PostData(string url, string data, out string info)
{
    info = "";
    CookieContainer cc = new CookieContainer();
    HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
    request.CookieContainer = cc;
    request.Method = "POST";
    request.ContentType = "application/x-www-form-urlencoded";
    Stream requestStream = request.GetRequestStream();
    byte[] byteArray = Encoding.UTF8.GetBytes(data);
    requestStream.Write(byteArray, 0, byteArray.Length);
    requestStream.Close();
    HttpWebResponse response = request.GetResponse() as HttpWebResponse;
    Uri responseUri = response.ResponseUri;
    Stream receiveStream = response.GetResponseStream();
    Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
    StreamReader readStream = new StreamReader(receiveStream, encode);
    string result = readStream.ReadToEnd();
    info = result;
    return 0;
}

2、解析返回的html
public ClassInfo[] GetClass(string html)
{
    ArrayList ar = new ArrayList();
    ArrayList arr = new ArrayList();
    string table = "";
    Regex regtable = new Regex(@"(?