The remote server returned an error: (407) Proxy Authentication Required when calling http location to get an xml

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C#

Below method calls the google api for getting the weather conditions for specific location.

But I am getting The remote server returned an error: (407) Proxy Authentication Required

When calling bolded and underlined below in the code:

Please reply faster it is urgent for me.

I think some config settings to be changed for accessing it can i know the config settings if i am correct.

public Conditions GetCurrentConditions(string location)
       {
           Conditions conditions = new Conditions();
           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)
           {
               conditions = null;
           }
           else
           {
               conditions.City = xmlConditions.SelectSingleNode("/xml_api_reply/weather/forecast_information/city").Attributes["data"].InnerText;
               conditions.Condition = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/condition").Attributes["data"].InnerText;
               conditions.TempC = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/temp_c").Attributes["data"].InnerText;
               conditions.TempF = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/temp_f").Attributes["data"].InnerText;
               conditions.Humidity = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/humidity").Attributes["data"].InnerText;
               conditions.Wind = xmlConditions.SelectSingleNode("/xml_api_reply/weather/current_conditions/wind_condition").Attributes["data"].InnerText;
           }

           return conditions;
       }