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[0].DefaultView;

            drpProvince.DataTextField = dsProvince.Tables[0].Columns[1].ColumnName; //"RegionName";
            drpProvince.DataValueField = dsProvince.Tables[0].Columns[0].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[0].DefaultView;

            drpCity.DataTextField = dsCity.Tables[0].Columns[1].ColumnName; //"CityName";
            drpCity.DataValueField = dsCity.Tables[0].Columns[0].ColumnName; //"CityID";

            drpCity.DataBind();
        }


    }
}