我用partialview像ASP.NET MVC PartialView有时会出错?
<td style="vertical-align: top;">@Html.Action("_HavaDurumuPartial")
,现在是工作在服务器上。但有时它会给出错误。错误回报低于:
这个错误不会发生百达。
我无法找到这个问题的任何原因。我不明白为什么有时会给这个错误。
如果有必要,我写下partialview和controller动作的内容。
行动
public ActionResult _HavaDurumuPartial(string il)
{
il = "Izmir";
HttpWebRequest GoogleRequest;
HttpWebResponse GoogleResponse = null;
XmlDocument GoogleXMLdoc = null;
try
{
GoogleRequest = (HttpWebRequest)WebRequest.Create("http://www.google.com/ig/api?weather=" + il + "&hl=tr&ie=utf-8&oe=utf-8");
GoogleResponse = (HttpWebResponse)GoogleRequest.GetResponse();
GoogleXMLdoc = new XmlDocument();
GoogleXMLdoc.Load(GoogleResponse.GetResponseStream());
XmlNode root = GoogleXMLdoc.DocumentElement;
XmlNodeList nodeList1 = root.SelectNodes("weather/forecast_information");
//ViewBag.HavaDurumu = ViewBag.HavaDurumu + "<b>Şehir : " + nodeList1.Item(0).SelectSingleNode("city").Attributes["data"].InnerText + "</b>";
XmlNodeList nodeList = root.SelectNodes("weather/current_conditions");
ViewBag.HavaDurumu = ViewBag.HavaDurumu + "<table cellpadding=\"5\"><tbody><tr><td style=\"width:50%;\"><b><big><nobr>" + nodeList.Item(0).SelectSingleNode("temp_c").Attributes["data"].InnerText + " °C | " + nodeList.Item(0).SelectSingleNode("temp_f").Attributes["data"].InnerText + " °F</nobr></big></b></br>";
ViewBag.HavaDurumu = ViewBag.HavaDurumu + "<b>Şuan:</b> " + nodeList.Item(0).SelectSingleNode("condition").Attributes["data"].InnerText + "";
ViewBag.HavaDurumu = ViewBag.HavaDurumu + " " + nodeList.Item(0).SelectSingleNode("wind_condition").Attributes["data"].InnerText + "</br>" + "";
ViewBag.HavaDurumu = ViewBag.HavaDurumu + " " + nodeList.Item(0).SelectSingleNode("humidity").Attributes["data"].InnerText;
nodeList = root.SelectNodes("descendant::weather/forecast_conditions");
int i = 0;
foreach (XmlNode nod in nodeList)
{
if (i == 0)
{
i++;
continue;
}
ViewBag.HavaDurumu = ViewBag.HavaDurumu + "</td><td align=\"center\">" + nod.SelectSingleNode("day_of_week").Attributes["data"].InnerText + "</br>" + "";
ViewBag.HavaDurumu = ViewBag.HavaDurumu + "<img src=\"http://www.google.com" + nod.SelectSingleNode("icon").Attributes["data"].InnerText + "\" alt=\"" + nod.SelectSingleNode("condition").Attributes["data"].InnerText + "\">" + "</br>";
ViewBag.HavaDurumu = ViewBag.HavaDurumu + nod.SelectSingleNode("low").Attributes["data"].InnerText + "°C" + "</br>";
ViewBag.HavaDurumu = ViewBag.HavaDurumu + nod.SelectSingleNode("high").Attributes["data"].InnerText + "°C" + "</br>";
}
ViewBag.HavaDurumu = ViewBag.HavaDurumu + "</td></tr></tbody></table>";
}
catch (System.Exception ex)
{
ViewBag.HavaDurumu = ex.Message;
}
finally
{
GoogleResponse.Close();
}
return PartialView();
}
我得到了从谷歌具体位置与此动作天气。 谢谢。
这很可能是HavaDurumuPartial动作中出现错误。有时不正确的行号显示为错误。所以检查你的Action,看看是否可以抛出NullReferenceException。 – Pbirkoff 2012-08-08 15:24:14
错误很可能发生在操作方法中;你能从你的控制器发布示例代码吗? – sellmeadog 2012-08-08 15:24:37
我加了行动方法。 – 2012-08-08 15:26:33