WebService 使用

using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page {     protected void Page_Load(object sender,EventArgs e)     {         cn.com.webxml.www.WeatherWebService wws = new cn.com.webxml.www.WeatherWebService();         this.DropDownList1.DataSource = wws.getSupportProvince();         this.DropDownList1.DataBind();     }     protected void Button1_Click(object sender,EventArgs e)     {         localhost.WebService ws = new localhost.WebService();         this.TextBox3.Text = ws.Add(Convert.ToInt32(this.TextBox1.Text),Convert.ToInt32(TextBox2.Text)).ToString();         this.GridView1.DataSource = ws.GetStudent();         this.GridView1.DataBind();      }          protected void DropDownList1_SelectedindexChanged(object sender,EventArgs e)     {         cn.com.webxml.www.WeatherWebService wws = new cn.com.webxml.www.WeatherWebService();         BindCity(wws);     }     private void BindCity(cn.com.webxml.www.WeatherWebService wws)     {         this.DropDownList2.Items.Clear();         string[] strs = wws.getSupportCity(this.DropDownList1.SelectedValue);         foreach (string str in strs)         {             this.DropDownList2.Items.Add(new ListItem(str.Substring(0,str.IndexOf("("))));         }     }     protected void Button2_Click(object sender,EventArgs e)     {         cn.com.webxml.www.WeatherWebService wws = new cn.com.webxml.www.WeatherWebService();         string[] strs = wws.getWeatherbyCityName(this.DropDownList2.SelectedValue);         this.Label1.Text = strs[0] + "," + strs[1] + "<br/>";         this.Label1.Text += "温度：" + strs[5] + "<br/>";         this.Label1.Text+="风："+strs[7];     } }