1.引入WebService：http://www.webxml.com.cn/WebServices/WeatherWebService.asmx
2.声明接口→界面获取值传入接口→接口返回值处理→输入
public string sWeatherHTML = "";
protected void Button1_Click(object sender, EventArgs e)
{
string txtCity=TextBox1.Text;
cn.com.webxml.www.WeatherWebService ws = new cn.com.webxml.www.WeatherWebService();
string[] aWeather = ws.getWeatherbyCityName(txtCity); StringBuilder sb=new StringBuilder();
sb.Append("<table>");
sb.Append(string.Format("<tr><td>城市：</td><td>{0}</td></tr>",aWeather[].ToString()));
sb.Append(string.Format("<tr><td>温度：</td><td>{0}</td></tr>", aWeather[].ToString()));
sb.Append(string.Format("<tr><td>气候：</td><td>{0}</td></tr>", aWeather[].ToString())); if(aWeather[].ToString()==aWeather[].ToString())
{
//转义：前面加@，双 双引号
sb.Append(string.Format(@"<tr><td>气候：</td><td><img src=""weather/a_{0}""></td></tr>", aWeather[].ToString()));
}
else
{
sb.Append(string.Format(@"<tr><td>气候：</td><td><img src=""weather/a_{0}"">转<img src=""weather/a_{1}""></td></tr>", aWeather[].ToString(), aWeather[].ToString()));
}
sb.Append(string.Format("<tr><td>详情：</td><td>{0}</td></tr>", aWeather[].ToString()));
sb.Append("</table>");
sWeatherHTML = sb.ToString();
}
3.界面显示处理
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</div> <div>
<%=sWeatherHTML %>
</div>
</form>
</body>