C#用天气预报的WebServices

Posted 2020-07-08

后台代码: 

1. protected void Page_Load(object sender, EventArgs e)  
2.    {  
3.        if (!IsPostBack)  
4.        {  
5.            WeatherWS ws = new WeatherWS();  
6.            IList<string> provinceDataSource = new List<string>();  
7.   
8.            DataSet proDs = ws.getRegionDataset();  
9.            ddlProvince.DataSource = proDs.Tables[0].DefaultView;  
10.            ddlProvince.DataTextField = "RegionName";  
11.            ddlProvince.DataValueField = "RegionID";  
12.            ddlProvince.DataBind();  
13.        }  
14.    }  
15.   
16.    protected void Button1_Click(object sender, EventArgs e)  
17.    {  
18.   
19.        WeatherWS ws = new WeatherWS();  
20.        string [] wsInfo = ws.getWeather(ddlCity.SelectedValue,"");  
21.        string result = string.Empty;  
22.        for (int i = 0; i < wsInfo.Length; i++)  
23.        {  
24.            result += wsInfo[i]+"<BR/>";  
25.        }  
26.        Label1.Text = result;  
27.   
28.    }  
29.   
30.    protected void ddlProvince_SelectedIndexChanged(object sender, EventArgs e)  
31.    {  
32.        WeatherWS ws = new WeatherWS();  
33.        DataSet cityDs = ws.getSupportCityDataset(ddlProvince.SelectedValue);  
34.        ddlCity.DataSource = cityDs.Tables[0].DefaultView;  
35.        ddlCity.DataTextField = "CityName";  
36.        ddlCity.DataValueField = "CityID";  
37.        ddlCity.DataBind();  
38.    }  

 .aspx代码 

1. <asp:UpdatePanel ID="UpdatePanel1" runat="server">  
2.                 <ContentTemplate>  
3.                     <asp:DropDownList ID="ddlProvince" runat="server" AutoPostBack="True"   
4.                         onselectedindexchanged="ddlProvince_SelectedIndexChanged">  
5.                     </asp:DropDownList>  
6.                     <asp:DropDownList ID="ddlCity" runat="server">  
7.                     </asp:DropDownList>  
8.                     <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />  
9.                     <br />  
10.                     <br />  
11.                     <br />  
12.                     <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>  
13.                 </ContentTemplate>  
14.             </asp:UpdatePanel>  

 访问速度很慢,,,... 

第一步要添加Web引用

  

 

然后页面就有东西了.....webServices给的很明确了