Question

次のコードでは、xmlスニペットにある場合でもIdの値をnullにしています。 iterableを取得した後、値を取得するために何かが必要なように見えます。どんな助けでも大歓迎です。コメントで示唆したよう

var str = 
    @" 
<CustomerCareReport xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.FireEms' xmlns:i='http://www.w3.org/2001/XMLSchema-instance'> 
    <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Edit</RecordAction> 
    <FireIncident xmlns:a='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.FireIncidents'> 
    <a:Address xmlns:b='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.Addresses'> 
     <b:City>SomeCity</b:City> 
     <b:HouseNumber>4019</b:HouseNumber> 
     <b:Id>1651880</b:Id> 
     <b:Lat>47.573911198</b:Lat> 
     <b:LocationType>Address</b:LocationType> 
     <b:Lon>-122.169529554</b:Lon> 
     <b:State xmlns:c='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.ValidationSets'> 
     <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Relate</RecordAction> 
     <c:Description>Washington</c:Description> 
     <c:EntryValue>WA</c:EntryValue> 
     <c:FilterString>WA Washington</c:FilterString> 
     <c:Id>85</c:Id> 
     <c:Inactive>false</c:Inactive> 
     <c:SetId>1021</c:SetId> 
     </b:State> 
     <b:StreetName>FACTORIA</b:StreetName> 
     <b:StreetSuffix>SE</b:StreetSuffix> 
     <b:StreetType>BLVD</b:StreetType> 
     <b:Venue> 
     <b:VenueName>BE</b:VenueName> 
     </b:Venue> 
     <b:VenueName>BE</b:VenueName> 
     <b:Zip>98006</b:Zip> 
    </a:Address> 
    <a:FDID xmlns:b='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.Jurisdictions'> 
     <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Relate</RecordAction> 
     <b:Ori>17M02</b:Ori> 
    </a:FDID> 
    <a:IncidentNumber>2016-00000071</a:IncidentNumber> 
    </FireIncident> 
    <OtherInformation> 
    <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Add</RecordAction> 
    <Documents xmlns:a='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.Documents'> 
     <a:Document> 
     <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Add</RecordAction> 
     <a:CheckOutMachine>TROPPLT</a:CheckOutMachine> 
     <a:Contents>Z2dn</a:Contents> 
     <a:Description>yoyo</a:Description> 
     <a:FileType xmlns:b='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.ValidationSets'> 
      <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Relate</RecordAction> 
      <b:Description>Notepad</b:Description> 
      <b:EntryValue>txt</b:EntryValue> 
      <b:FilterString>txt Notepad</b:FilterString> 
      <b:Id>1</b:Id> 
      <b:Inactive>false</b:Inactive> 
      <b:SetId>2574</b:SetId> 
     </a:FileType> 
     <a:Id>0e2821b0-9430-40a8-8964-443cdeeda018</a:Id> 
     <a:Name>yoyo</a:Name> 
     <a:UsageKey>0</a:UsageKey> 
     <a:UsageType>56</a:UsageType> 
     </a:Document> 
     <a:Document> 
     <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Add</RecordAction> 
     <a:CheckOutMachine>TROPPLTBKOLLURU</a:CheckOutMachine> 
     <a:Contents>ZmhmaA0KZmZmDQpmamZqZmpmDQo=</a:Contents> 
     <a:Description>test 2</a:Description> 
     <a:FileType xmlns:b='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.ValidationSets'> 
      <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Relate</RecordAction> 
      <b:Description>Notepad</b:Description> 
      <b:EntryValue>txt</b:EntryValue> 
      <b:FilterString>txt Notepad</b:FilterString> 
      <b:Id>1</b:Id> 
      <b:Inactive>false</b:Inactive> 
      <b:SetId>2574</b:SetId> 
     </a:FileType> 
     <a:Id>9b42f7e0-e0b3-4e83-a466-5862e9cb5bbe</a:Id> 
     <a:Name>test 2</a:Name> 
     <a:UsageKey>0</a:UsageKey> 
     <a:UsageType>56</a:UsageType> 
     </a:Document> 
    </Documents> 
    </OtherInformation> 
    <Response> 
    <Apparatus xmlns:a='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.Units'> 
     <RecordAction xmlns='http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects'>Relate</RecordAction> 
     <a:Id>-1672</a:Id> 
     <a:UnitNumber>E1</a:UnitNumber> 
    </Apparatus> 
    <ResponseNumber>1600000071E1</ResponseNumber> 
    </Response> 
    <Time> 
    <CallDatetime>2016-07-01T12:26:34.277-04:00</CallDatetime> 
    <DispatchNotifiedDatetime>2016-07-01T12:26:34.277-04:00</DispatchNotifiedDatetime> 
    </Time> 
</CustomerCareReport> 
"; 

      var xelement = XElement.Parse(str); 
      XNamespace ns = xelement.Name.Namespace; 
      var documents = xelement.Descendants(ns + "Documents"); 

      foreach (XElement document in documents) 
      { 
       if (document.Name.LocalName.Equals("Id")) 
       { 
        Console.WriteLine(document.Value); 

       } 

      } 

Answer 1

、Idのローカル名を持つDocumentsのない子要素はありません。これは子供の子供ですa:Document要素。右の名前空間を使用して

、クエリは次のようになります。

XNamespace ns = "http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.FireEms" 
XNamespace a = "http://schemas.datacontract.org/2004/07/Foo.Bar.Frameworks.Reporting.Stack.Infrastructure.DataObjects.Documents" 

var element = XElement.Parse(str); 

var ids = element 
    .Descendants(ns + "Documents") 
    .Descendants(a + "Id"); 

が作動し、デモ用のthis fiddleを参照してください。