C# QQ weather (二)

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/// <summary> /// 2011-06-16 塗聚文 /// </summary> public partial class QQweather : System.Web.UI.Page {       public string selectcity = "1";     string strUrl = "http://weather.qq.com/inc/ss1.htm";     /// <summary>     ///     /// </summary>     /// <param name="sender"></param>     /// <param name="e"></param>     protected void Page_Load(object sender, EventArgs e)     {         ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);         HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri("http://www.dupcit.com/QQweather.aspx"));         req.Method = "GET";         HttpWebResponse res = (HttpWebResponse)req.GetResponse();         selectcity = DropDownList1.SelectedValue.ToString();         if (!IsPostBack)         {               this.DropDownList1.DataSource = CreateDataSource();             DropDownList1.DataTextField = "WeatherTextField";             DropDownList1.DataValueField = "WeatherValueField";               // Bind the data to the control.             DropDownList1.DataBind();               // Set the default selected item, if desired.             DropDownList1.SelectedIndex = 0;             selectcity = @"1";                           strUrl = "http://weather.qq.com/inc/ss1.htm";             geovindu.InnerHtml = getHttpData(strUrl);         }         }     /// <summary>     ///     /// </summary>     /// <param name="sender"></param>     /// <param name="e"></param>     protected void Button1_Click(object sender, EventArgs e)     {         ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);         HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri("http://www.dupcit.com/QQweather.aspx"));         req.Method = "GET";         HttpWebResponse res = (HttpWebResponse)req.GetResponse();         selectcity = DropDownList1.SelectedValue.ToString();         strUrl = "http://weather.qq.com/inc/ss"+selectcity+".htm";         geovindu.InnerHtml = getHttpData(strUrl);             }     /// <summary>     /// <%# selectcity%>     /// </summary>     /// <returns></returns>     ICollection CreateDataSource()     {                  DataTable dt = new DataTable();                    dt.Columns.Add(new DataColumn("WeatherTextField", typeof(String)));         dt.Columns.Add(new DataColumn("WeatherValueField", typeof(String)));         dt.Rows.Add(CreateRow("香港", "1", dt));         dt.Rows.Add(CreateRow("澳門", "2", dt));         dt.Rows.Add(CreateRow("哈爾濱", "17", dt));         dt.Rows.Add(CreateRow("烏魯木齊", "28", dt));         dt.Rows.Add(CreateRow("西寧", "56", dt));         dt.Rows.Add(CreateRow("蘭州", "57", dt));         dt.Rows.Add(CreateRow("呼和浩特", "69", dt));         dt.Rows.Add(CreateRow("銀川", "78", dt));         dt.Rows.Add(CreateRow("石家莊", "82", dt));         dt.Rows.Add(CreateRow("太原", "84", dt));         dt.Rows.Add(CreateRow("長春 ", "103", dt));         dt.Rows.Add(CreateRow("瀋陽 ", "115", dt));         dt.Rows.Add(CreateRow("北京 ", "125", dt));         dt.Rows.Add(CreateRow("天津 ", "127", dt));         dt.Rows.Add(CreateRow("濟南 ", "140", dt));         dt.Rows.Add(CreateRow("拉薩 ", "150", dt));         dt.Rows.Add(CreateRow("成都 ", "166", dt));         dt.Rows.Add(CreateRow("昆明 ", "179", dt));         dt.Rows.Add(CreateRow("西安 ", "186", dt));         dt.Rows.Add(CreateRow("鄭州 ", "189", dt));         dt.Rows.Add(CreateRow("武漢 ", "211", dt));         dt.Rows.Add(CreateRow("重慶 ", "212", dt));         dt.Rows.Add(CreateRow("長沙 ", "218", dt));         dt.Rows.Add(CreateRow("貴陽 ", "227", dt));         dt.Rows.Add(CreateRow("桂林 ", "232", dt));         dt.Rows.Add(CreateRow("南京 ", "244", dt));         dt.Rows.Add(CreateRow("合肥 ", "248", dt));         dt.Rows.Add(CreateRow("上海 ", "252", dt));         dt.Rows.Add(CreateRow("杭州 ", "255", dt));         dt.Rows.Add(CreateRow("南昌 ", "264", dt));         dt.Rows.Add(CreateRow("福州 ", "276", dt));         dt.Rows.Add(CreateRow("臺北 ", "280", dt));         dt.Rows.Add(CreateRow("廈門 ", "287", dt));         dt.Rows.Add(CreateRow("廣州 ", "292", dt));         dt.Rows.Add(CreateRow("南寧 ", "295", dt));         dt.Rows.Add(CreateRow("深圳 ", "296", dt));         dt.Rows.Add(CreateRow("海口 ", "303", dt));         DataView dv = new DataView(dt);         return dv;       }     /// <summary>     ///     /// </summary>     /// <param name="Text"></param>     /// <param name="Value"></param>     /// <param name="dt"></param>     /// <returns></returns>     DataRow CreateRow(String Text, String Value, DataTable dt)     {         DataRow dr = dt.NewRow();         dr[0] = Text;         dr[1] = Value;         return dr;       }     public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)     {         //直接确认，否则打不开         return true;     }     /// <summary>     ///     /// </summary>     /// <param name="url"></param>     /// <returns></returns>     public string getHttpData(string url)     {         WebClient myWebClient = new WebClient();         Stream myStream = myWebClient.OpenRead(url);         WebHeaderCollection myHeader = myWebClient.ResponseHeaders;         string myCharset = myHeader.Get("Content-Type");         Match myMatch = Regex.Match(myCharset, "(?<=(charset=)).*$");         StreamReader myReader = new StreamReader(myStream, Encoding.GetEncoding(myMatch.ToString()));         return myReader.ReadToEnd();     }