NullReferenceException was unhandled

[tookerello]

Hi could somebody please help me with this as i have been trying to fix it for hours!!!
I keep receving the "NullReferenceException was unhandled " message in the line starting with cond.Town=xmlConditions.........


public static Conditions GetCurrentConditions(string location)
{
Conditions c;
c = null;
c = new Conditions();

c.GetCurrentConditions();

XmlDocument xmlConditions = new XmlDocument();
xmlConditions.Load(string.Format("

http://www.google.com/ig/api?weather={0}",

location));
if (xmlConditions.SelectSingleNode("xml_api_reply/weather/problem_cause") != null)
{
c = null;
}
else
{
Conditions cond = new Conditions();
cond.Town = xmlConditions.SelectSingleNode("/xml_api_reply/weather/forecast_information/city").Attributes["data"].InnerText;
cond.Condition = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/condition").Attributes["data"].InnerText;
cond.TempC = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/temp_c").Attributes["data"].InnerText;
cond.TempF = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/temp_f").Attributes["data"].InnerText;
cond.Humidity = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/humidity").Attributes["data"].InnerText;
cond.Wind = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/wind_condition").Attributes["data"].InnerText;

}

return c;
}

 

[jmeckley]

the path to city is different than the other xpath queries. are you sure all your paths are correct? if the node doesn't exist the method will return null. hence the null reference exception.

Jason Meckley
Programmer
Specialty Bakers, Inc.

faq855-7190
faq732-7259