C#用天气预报的WebServices

后台代码:

 

 

 protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            WeatherWS ws = new WeatherWS();            IList<string> provinceDataSource = new List<string>();            DataSet proDs = ws.getRegionDataset();            ddlProvince.DataSource = proDs.Tables[0].DefaultView;            ddlProvince.DataTextField = "RegionName";            ddlProvince.DataValueField = "RegionID";            ddlProvince.DataBind();        }    }    protected void Button1_Click(object sender, EventArgs e)    {        WeatherWS ws = new WeatherWS();        string [] wsInfo = ws.getWeather(ddlCity.SelectedValue,"");        string result = string.Empty;        for (int i = 0; i < wsInfo.Length; i++)        {            result += wsInfo[i]+"<BR/>";        }        Label1.Text = result;    }    protected void ddlProvince_SelectedIndexChanged(object sender, EventArgs e)    {        WeatherWS ws = new WeatherWS();        DataSet cityDs = ws.getSupportCityDataset(ddlProvince.SelectedValue);        ddlCity.DataSource = cityDs.Tables[0].DefaultView;        ddlCity.DataTextField = "CityName";        ddlCity.DataValueField = "CityID";        ddlCity.DataBind();    }

 

 

.aspx代码

 

<asp:UpdatePanel ID="UpdatePanel1" runat="server">                <ContentTemplate>                    <asp:DropDownList ID="ddlProvince" runat="server" AutoPostBack="True"                         onselectedindexchanged="ddlProvince_SelectedIndexChanged">                    </asp:DropDownList>                    <asp:DropDownList ID="ddlCity" runat="server">                    </asp:DropDownList>                    <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />                    <br />                    <br />                    <br />                    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>                </ContentTemplate>            </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