我有一个xml文件,如下所示
<data>
<request>
<type></type>
<query></query>
</request>
<current_condition></current_condition>
<weather>
<date>26-12-2012</date>
<astronomy>
<sunrise></sunrise>
</astronomy>
<maxtempC/>
<maxtempF/>
<hourly>
<time>0</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
<hourly>
<time>6</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
<hourly>
<time>12</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
<hourly>
<time>18</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
</weather>
<weather>
<date>27-12-2012</date>
<astronomy>
<sunrise></sunrise>
</astronomy>
<maxtempC/>
<maxtempF/>
<hourly>
<time>0</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
<hourly>
<time>6</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
<hourly>
<time>12</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
<hourly>
<time>18</time>
<tempC>4</tempC>
<tempF>39</tempF>
<windspeedMiles>17</windspeedMiles>
</hourly>
</weather>
</data>
我可以从current_condition和weather获取数据,即使我使用以下内容:
var fiveDayForcastDayTwo = _test("washington, tyne and wear").Skip(1).First();
将返回第27个
var fiveDayForcastDayTwo = _test("washington, tyne and wear").Skip(2).First();
将返回第28位
我遇到的问题是每小时一次,如何循环每小时节点并获取时间0和时间6等数据,同时也跳到第二天。
任何帮助将不胜感激 乔治
cs文件的代码
public IEnumerable<DisplayWeatherConditions> DisplayFiveDayForcast(string id)
{
XDocument doc = XDocument.Load(string.Format("http://www.worldweatheronline.com/feed/premium-weather-v2.ashx?key={0}&feedkey={1}&format=xml&q={2}&tp=6",
sPartnerID, sLicenseKey, HttpUtility.UrlEncode(id)));
var displayFiveDayForcast = from wd in doc.Descendants("weather")
select new DisplayWeatherConditions()
{
date = (string)wd.Element("date") ?? "NA",
sunRise = (string)wd.Element("astronomy").Element("sunrise") ?? "NA",
sunSet = (string)wd.Element("astronomy").Element("sunset") ?? "NA",
maxtempC = (string)wd.Element("maxtempC") ?? "NA",
maxtempF = (string)wd.Element("maxtempF") ?? "NA",
mintempC = (string)wd.Element("mintempC") ?? "NA",
mintempF = (string)wd.Element("mintempF") ?? "NA",
hourlyTempC = (string)wd.Element("hourly")?? "NA",
};
return displayFiveDayForcast.AsEnumerable();
}
答案 0 :(得分:0)
我能够通过使用以下内容从您提供的(固定)XML数据中获取您请求的值(请注意,我使用匿名类型来收集值)。
XDocument doc = XDocument.Load([your source document]);
var v1 = doc.Descendants("weather");
var v3 = v1.Where(e => e.Element("date").Value == "26-12-2012");
var v2 = v3.Elements("hourly")
.Select(e =>
new
{
hour = e.Element("time").Value,
tempC = e.Element("tempC").Value,
tempF = e.Element("tempF").Value,
wind = e.Element("windspeedMiles").Value
});
或者在您已有的代码的上下文中:
...
hourlyTempC = wd.Descendants("hourly").Select(e =>
new
{
hour = e.Element("time").Value,
tempC = e.Element("tempC").Value,
tempF = e.Element("tempF").Value,
wind = e.Element("windspeedMiles").Value
})
...
您提供的代码将生成的第一个元素hourly
转换为字符串 - 但由于您有多个hourly
元素,因此您需要一个可以处理该元素的结构(如IEnumerable) - 这正是由Select
返回。