Как я могу суммировать население всего города в каждой утилите (данные XML) с помощью C#?

Question

У меня следующий файл XML

<?xml version="1.0" encoding="UTF-8"?> 
<DetailedUtilityCollection SchemaVersion="1.0"> 
<DetailedUtility UtilityId="720" UtilityName="Chelan County Public Utility District" CountryCode="US" StateCode="WA"> 
    <Rate Id="2350" Name="Residential Service (Schedule 1)" Sector="Residential" Metering="OptionalNetMetering" IsDefault="true" IsTimeOfUse="false" /> 
    <Rate Id="2351" Name="General Service - Nondemand (Schedule 2)" Sector="Commercial" Metering="OptionalNetMetering" IsDefault="true" IsTimeOfUse="false" /> 
    <Rate Id="2352" Name="General Service - Demand (Schedule 2)" Sector="Commercial" Metering="OptionalNetMetering" IsDefault="false" IsTimeOfUse="false" /> 
    <City Name="Cashmere" Population="7233"> 
    <CityLocation Zip="98815" Lat="47.53593" Lng="-120.494571" /> 
    </City> 
    <City Name="Chelan" Population="6394"> 
    <CityLocation Zip="98816" Lat="47.901204" Lng="-120.139618" /> 
    </City> 
    <City Name="Entiat" Population="1953"> 
    <CityLocation Zip="98822" Lat="47.885389" Lng="-120.47078" /> 
    </City> 
    <City Name="Leavenworth" Population="6504"> 
    <CityLocation Zip="98826" Lat="47.82259" Lng="-120.825267" /> 
    </City> 
    <City Name="Wenatchee" Population="40977"> 
    <CityLocation Zip="98801" Lat="47.451974" Lng="-120.330783" /> 
    <CityLocation Zip="98802" Lat="47.494001" Lng="-120.193856" /> 
    <CityLocation Zip="98807" Lat="47.4236" Lng="-120.3092" /> 
    </City> 
    <City Name="West Wenatchee" Population="40977"> 
    <CityLocation Zip="98801" Lat="47.451974" Lng="-120.330783" /> 
    </City> 
    </DetailedUtility> 
    <DetailedUtility UtilityId="721" UtilityName="Clallam County PUD" CountryCode="US" StateCode="WA"> 
    <Rate Id="2353" Name="General Service - Residential, Farm (Schedule E-4)" Sector="Residential" Metering="OptionalNetMetering" IsDefault="true" IsTimeOfUse="false" /> 
    <Rate Id="2354" Name="General Service - Commercial (Schedule E-4)" Sector="Commercial" Metering="OptionalNetMetering" IsDefault="true" IsTimeOfUse="false" /> 
    <Rate Id="2355" Name="Large Power Service (Schedule E-5)" Sector="Commercial" Metering="OptionalNetMetering" IsDefault="false" IsTimeOfUse="false" /> 
    <City Name="Forks" Population="6261"> 
    <CityLocation Zip="98331" Lat="47.851473" Lng="-124.28411" /> 
    </City> 
    <City Name="Neah Bay" Population="1414"> 
    <CityLocation Zip="98357" Lat="48.332856" Lng="-124.639563" /> 
    </City> 
    <City Name="Port Angeles" Population="22230"> 
    <CityLocation Zip="98362" Lat="47.99614" Lng="-123.38281" /> 
    <CityLocation Zip="98363" Lat="48.017263" Lng="-123.824588" /> 
    </City> 
    <City Name="Port Angeles East" Population="-1" /> 
    <City Name="Sequim" Population="26856"> 
    <CityLocation Zip="98382" Lat="48.025762" Lng="-123.061784" /> 
    </City> 
    </DetailedUtility> 
    </DetailedUtilityCollection> 

Как я могу получить сумму всех городских жителей в каждом utilityid в C#. Пожалуйста, помогите мне.

Я пробовал следующие коды, но никто не работает для меня.

xmlDoc.LoadXml(strFetchResData); 

         //dynamic BillUtilityData = JsonConvert.SerializeXmlNode(xmlDoc).Replace(@"@", @"").Remove(1, 44); 
         //dynamic BillUtilityData = JsonConvert.DeserializeObject<dynamic>(JsonConvert.SerializeXmlNode(xmlDoc).Replace(@"@", @"").Remove(1, 44)); 
         //dynamic BillUtilityData = JsonString; 
         XmlNodeList utilitylist = xmlDoc.DocumentElement.ChildNodes; 

         if (utilitylist.Count > 0) 
         { 
          foreach (XmlNode nodeUtil in utilitylist) 
          { 
           double? totalPopulation = 0; 
           //xmlDoc.Load(nodeUtil.InnerXml.ToString()); 
           dynamic BillUtilityData = JsonConvert.DeserializeObject<dynamic>(JsonConvert.SerializeXmlNode(nodeUtil).Replace(@"@", @"").Remove(1, 44)); 
           //totalPopulation = Convert.ToDouble((nodeUtil).LastChild.Attributes["Population"].Value); 
           //xmlDoc.LoadXml(nodeUtil.InnerText); 


           //foreach (XmlNode cityUtil in nodeUtil["City"]) 
           //{ 
           // totalPopulation = SunpowerServiceMethods.calculateTotalPopulationOfCitySiblings(cityUtil,totalPopulation); 
           // break; 
           //} 

          } 

Answer 1

EDIT: Таким образом, ваш real XML файл пространства имен объявлен, вы должны иметь с ними дело.

Предлагаю вам использовать LINQ to XML. С Enumerable.Sum для каждого грузопассажирских элемента выберите сумму из его города Население:

var xdoc = XDocument.Load(path_to_xml); 
var ns = xdoc.Root.GetDefaultNamespace(); 
var query = from u in xdoc.Root.Elements(ns + "DetailedUtility") 
      select new 
      { 
       UtilityId = (int)u.Attribute("UtilityId"), 
       TotalPopulation = u.Elements(ns + "City") 
            .Sum(c => (int)c.Attribute("Population")) 
      }; 

Возвращает:

{ UtilityId = 720, TotalPopulation = 104038 } 
{ UtilityId = 721, TotalPopulation = 56760 } 

Answer 2

Это должно сделать это:

var xml = "all your xml"; 
    var doc = XDocument.Parse(xml); //or XDocument.Load for loading from a stream 
    var sum = doc.Root.Elements("DetailedUtility").Select(element => new 
    { 
     Id = element.Attribute("UtilityId"), 
     Population = element.Elements("City").Sum(e => int.Parse(e.Attribute("Population").Value)) 
    }); 

Answer 3

Я проверил этот кусок кода. Он работает нормально. Дайте мне знать, если у вас возникнут проблемы.

XmlReader reader = XmlReader.Create("D:\\population.xml"); 
     List<string> Utility_id = new List<string>(); 
     List<int> population = new List<int>(); 
     int i=0;    
     while (reader.Read()) 
     { 
      if (reader.NodeType == XmlNodeType.Element) 
      { 
       if (reader.Name == "DetailedUtility") 
       { 
        Utility_id.Add(reader.GetAttribute(0)); 
        population.Add(0); 
        i++; 
       } 
       if (reader.Name == "City") 
       { 
        population[i-1] += Convert.ToInt32(reader.GetAttribute(1)); 
       } 
      } 
     } 
     for (i = 0; i < Utility_id.Count; i++) 
     { 
      Console.WriteLine("Utility ID = " + Utility_id[i] + "\t Population = " + population[i]); 
     } 
      Console.ReadLine(); 

С уважением, Prajul G