/// 
    /// 2011-06-16 塗聚文    /// 
    public partial class QQweather : System.Web.UI.Page    {        public string selectcity = "1";        /// 
        ///         /// 
        ///         ///         protected void Page_Load(object sender, EventArgs e)        {            ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);            HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri("https://www.dusystem.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";            }        }        /// 
        ///         /// 
        ///         ///         protected void Button1_Click(object sender, EventArgs e)        {            ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);            HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri("https://www.dusystem.com/QQweather.aspx"));            req.Method = "GET";            HttpWebResponse res = (HttpWebResponse)req.GetResponse();            selectcity = DropDownList1.SelectedValue.ToString();        }        /// 
        /// <%# selectcity%>        /// 
        /// 
             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;        }        /// 
        ///         /// 
        ///         ///         ///         /// 
             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;        }