C#调用免费天气预报WebService

 using System;
 using System.Collections;
 using System.Configuration;
 using System.Data;
 using System.Linq;
 using System.Web;
 using System.Web.Security;
 using System.Web.UI;
 using System.Web.UI.HtmlControls;
 using System.Web.UI.WebControls;
 using System.Web.UI.WebControls.WebParts;
 using System.Xml.Linq;
 using MyWeather.WS;

 namespace MyWeather
 {
     public partial class _Default : System.Web.UI.Page

     {
         //WeatherWS ws = new WeatherWS();

         protected void Page_Load(object sender, EventArgs e)
         {

             if (!IsPostBack)
             {
                 BindProvinceData();
                 BindCityData();

                 ShowWeatherData();

             }

         }

         protected void drpProvince_SelectedIndexChanged(object sender, EventArgs e)
         {
             BindCityData();

             ShowWeatherData();

         }

         protected void drpCity_SelectedIndexChanged(object sender, EventArgs e)
         {
             ShowWeatherData();
         }

         /// <summary>
         /// 显示选定城市的天气
         /// </summary>
         void ShowWeatherData()
         {
             WeatherWS ws = new WeatherWS();
             string[] weathers = ws.getWeather(drpCity.SelectedValue, "");
             foreach (string item in weathers)
             {
                 Response.Write(item + "<br>");
             }

         }

         /// <summary>
         /// 绑定省
         /// </summary>
         void BindProvinceData()
         {
             WeatherWS ws = new WeatherWS();
             DataSet dsProvince = ws.getRegionDataset();
             drpProvince.DataSource = dsProvince.Tables[].DefaultView;

             drpProvince.DataTextField = dsProvince.Tables[].Columns[].ColumnName; //"RegionName";
             drpProvince.DataValueField = dsProvince.Tables[].Columns[].ColumnName;//"RegionID";

             drpProvince.DataBind();

         }
         /// <summary>
         /// 绑定市
         /// </summary>
         void BindCityData()
         {
             WeatherWS ws = new WeatherWS();
             DataSet dsCity = ws.getSupportCityDataset(drpProvince.SelectedValue);
             drpCity.DataSource = dsCity.Tables[].DefaultView;

             drpCity.DataTextField = dsCity.Tables[].Columns[].ColumnName; //"CityName";
             drpCity.DataValueField = dsCity.Tables[].Columns[].ColumnName; //"CityID";

             drpCity.DataBind();
         }

     }
 }