C＃で複雑な（より深い階層の）XML出力用のデータセットを作成するにはどうすればよいですか？

Question

私は前のデータセットを使用したことがないが、今、私は正確に次のXML出力を生成したデータセットを作成したい：

<candidatelist> 
    <comment> 
    created 15.03.2016 
    </comment> 
    <candidates> 
    <candidate> 
     <personalinfo> 
     <name>Parker</name> 
     <firstname>Peter</firstname> 
     <sex>M</sex> 
     <birthday>19.02.1993</birthday> 
     <group>group1</group> 
     <language>E</language> 
     <type>H</type> 
     </personalinfo> 
     <items> 
     <item>item1</item> 
     <item>item2</item> 
     <item>item3</item> 
     <item>item4</item> 
     <item>item5</item> 
     <item>item6</item> 
     <item>item7</item> 
     <item>item8</item> 
     </items> 
    </candidate> 
    <candidate> 
     ... 
    </candidate> 
    ... 
    </candidates> 
</candidatelist> 

私のアプローチは次のようになります。コラム「名前」と「personalinfo」データテーブルを作成し、「ファーストネーム"、...、および" item "列のデータ可能な" items "があります。それから私は、「候補」という名前のデータセットを作成し、このように両方のテーブルを追加することができます。

DataTable table1 = new DataTable("personalinfo"); 
table1.Columns.Add("name"); 
table1.Columns.Add("firstname"); 
... 
table1.Rows.Add("Parker", "Peter", ...); 

DataTable table2 = new DataTable("items"); 
table2.Columns.Add("item"); 
table2.Rows.Add("item1"); 
table2.Rows.Add("item2"); 
... 

DataSet set = new DataSet("candidate"); 
set.Tables.Add(table1); 
set.Tables.Add(table2); 

しかし、どのように私は新しいセット「候補者」に、いくつかの候補を追加し、（一緒に「コメント」付き）という新しいセットを追加することができます「候補者」という名前のセットに？

Answer 1

（XmlSerializerをするために）....これを試してみてください

のようなものを試してみてくださいtest.xmlという名前のファイル（あなたのアプリケーションのビルドフォルダにあります）にあります。例では、（のtest.xmlファイルに）XMLから戻って候補者のcandidatelistにXMLをデシリアライズ

Usings .....

using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Windows.Forms; 
using System.Xml.Serialization; 

クラス.....

を実証します

[XmlRoot(ElementName = "personalinfo")] 
public class Personalinfo 
{ 
    [XmlElement(ElementName = "name")] 
    public string Name { get; set; } 
    [XmlElement(ElementName = "firstname")] 
    public string Firstname { get; set; } 
    [XmlElement(ElementName = "sex")] 
    public string Sex { get; set; } 
    [XmlElement(ElementName = "birthday")] 
    public string Birthday { get; set; } 
    [XmlElement(ElementName = "group")] 
    public string Group { get; set; } 
    [XmlElement(ElementName = "language")] 
    public string Language { get; set; } 
    [XmlElement(ElementName = "type")] 
    public string Type { get; set; } 
} 

[XmlRoot(ElementName = "items")] 
public class Items 
{ 
    public Items() 
    { 
     this.Item = new List<string>(); 
    } 
    [XmlElement(ElementName = "item")] 
    public List<string> Item { get; set; } 
} 

[XmlRoot(ElementName = "candidate")] 
public class Candidate 
{ 
    public Candidate() 
    { 
     this.Items = new Items(); 
    } 
    [XmlElement(ElementName = "personalinfo")] 
    public Personalinfo Personalinfo { get; set; } 
    [XmlElement(ElementName = "items")] 
    public Items Items { get; set; } 
} 

[XmlRoot(ElementName = "candidates")] 
public class Candidates 
{ 
    public Candidates() 
    { 
     this.Candidate = new List<Candidate>(); 
    } 
    [XmlElement(ElementName = "candidate")] 
    public List<Candidate> Candidate { get; set; } 
} 

[XmlRoot(ElementName = "candidatelist")] 
public class Candidatelist 
{ 
    public Candidatelist() 
    { 
     this.Candidates = new Candidates(); 
    } 
    [XmlElement(ElementName = "comment")] 
    public string Comment { get; set; } 
    [XmlElement(ElementName = "candidates")] 
    public Candidates Candidates { get; set; } 
} 

コード.....

private void Form1_Load(object sender, EventArgs e) 
    { 
     try 
     { 
      Candidatelist Candidatelist = new Candidatelist(); 
      Candidatelist.Comment = "created 15.03.2016"; 

      Candidate candidate1 = new Candidate(); 
      candidate1.Personalinfo = new Personalinfo() { Name = "Parker", Firstname = "Peter", Sex = "M", Birthday = "19.02.1993", Group = "group1", Language = "E", Type = "H" }; 
      candidate1.Items.Item.Add("Item1"); 
      candidate1.Items.Item.Add("Item2"); 
      candidate1.Items.Item.Add("Item3"); 
      candidate1.Items.Item.Add("Item4"); 
      candidate1.Items.Item.Add("Item5"); 
      candidate1.Items.Item.Add("Item6"); 
      candidate1.Items.Item.Add("Item7"); 
      candidate1.Items.Item.Add("Item8"); 

      Candidatelist.Candidates.Candidate.Add(candidate1); 

      Candidate candidate2 = new Candidate(); 
      candidate2.Personalinfo = new Personalinfo() { Name = "John", Firstname = "Doe", Sex = "M", Birthday = "19.02.1993", Group = "group1", Language = "E", Type = "H" }; 
      candidate2.Items.Item.Add("Item1"); 
      candidate2.Items.Item.Add("Item2"); 
      candidate2.Items.Item.Add("Item3"); 
      candidate2.Items.Item.Add("Item4"); 
      candidate2.Items.Item.Add("Item5"); 
      candidate2.Items.Item.Add("Item6"); 
      candidate2.Items.Item.Add("Item7"); 
      candidate2.Items.Item.Add("Item8"); 

      Candidatelist.Candidates.Candidate.Add(candidate2); 

      // and to Serialize to XML 
      Serialize(Candidatelist); 

      // and to Deserialize from XML 
      Candidatelist deserializedCandidatelist = Deserialize<Candidatelist>(); 

     } 
     catch (Exception ex) 
     { 
      throw; 
     } 

    } 

    private static void Serialize<T>(T data) 
    { 

     // Use a file stream here. 
     using (TextWriter WriteFileStream = new StreamWriter("test.xml")) 
     { 
      // Construct a SoapFormatter and use it 
      // to serialize the data to the stream. 
      XmlSerializer SerializerObj = new XmlSerializer(typeof(T)); 

      try 
      { 
       // Serialize EmployeeList to the file stream 
       SerializerObj.Serialize(WriteFileStream, data); 
      } 
      catch (Exception ex) 
      { 
       Console.WriteLine(string.Format("Failed to serialize. Reason: {0}", ex.Message)); 
      } 
     } 
    } 

    private static T Deserialize<T>() where T : new() 
    { 
     //List<Employee> EmployeeList2 = new List<Employee>(); 
     // Create an instance of T 
     T ReturnListOfT = CreateInstance<T>(); 


     // Create a new file stream for reading the XML file 
     using (FileStream ReadFileStream = new FileStream("test.xml", FileMode.Open, FileAccess.Read, FileShare.Read)) 
     { 
      // Construct a XmlSerializer and use it 
      // to serialize the data from the stream. 
      XmlSerializer SerializerObj = new XmlSerializer(typeof(T)); 
      try 
      { 
       // Deserialize the hashtable from the file 
       ReturnListOfT = (T)SerializerObj.Deserialize(ReadFileStream); 
      } 
      catch (Exception ex) 
      { 
       Console.WriteLine(string.Format("Failed to serialize. Reason: {0}", ex.Message)); 
      } 

     } 
     // return the Deserialized data. 
     return ReturnListOfT; 
    } 

    // function to create instance of T 
    public static T CreateInstance<T>() where T : new() 
    { 
     return (T)Activator.CreateInstance(typeof(T)); 
    } 

（のtest.xmlから）XML

<?xml version="1.0" encoding="utf-8"?> 
<candidatelist xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <comment>created 15.03.2016</comment> 
    <candidates> 
    <candidate> 
     <personalinfo> 
     <name>Parker</name> 
     <firstname>Peter</firstname> 
     <sex>M</sex> 
     <birthday>19.02.1993</birthday> 
     <group>group1</group> 
     <language>E</language> 
     <type>H</type> 
     </personalinfo> 
     <items> 
     <item>Item1</item> 
     <item>Item2</item> 
     <item>Item3</item> 
     <item>Item4</item> 
     <item>Item5</item> 
     <item>Item6</item> 
     <item>Item7</item> 
     <item>Item8</item> 
     </items> 
    </candidate> 
    <candidate> 
     <personalinfo> 
     <name>John</name> 
     <firstname>Doe</firstname> 
     <sex>M</sex> 
     <birthday>19.02.1993</birthday> 
     <group>group1</group> 
     <language>E</language> 
     <type>H</type> 
     </personalinfo> 
     <items> 
     <item>Item1</item> 
     <item>Item2</item> 
     <item>Item3</item> 
     <item>Item4</item> 
     <item>Item5</item> 
     <item>Item6</item> 
     <item>Item7</item> 
     <item>Item8</item> 
     </items> 
    </candidate> 
    </candidates> 
</candidatelist> 

Answer 2

コードは最初candidatelistのインスタンスを作成し、2つの候補 を追加し、それはその後、XMLにデータをシリアル化し、この

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Xml; 
using System.Xml.Linq; 
using System.Data; 

namespace ConsoleApplication85 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      string xml = 
       "<candidatelist>" + 
        "<comment>" + 
        "created 15.03.2016" + 
        "</comment>" + 
        "<candidates>" + 
        "<candidate>" + 
         "<personalinfo>" + 
         "<name>Parker</name>" + 
         "<firstname>Peter</firstname>" + 
         "<sex>M</sex>" + 
         "<birthday>19.02.1993</birthday>" + 
         "<group>group1</group>" + 
         "<language>E</language>" + 
         "<type>H</type>" + 
         "</personalinfo>" + 
         "<items>" + 
         "<item>item1</item>" + 
         "<item>item2</item>" + 
         "<item>item3</item>" + 
         "<item>item4</item>" + 
         "<item>item5</item>" + 
         "<item>item6</item>" + 
         "<item>item7</item>" + 
         "<item>item8</item>" + 
         "</items>" + 
        "</candidate>" + 
        "<candidate>" + 
         "<personalinfo>" + 
         "<name>Parker</name>" + 
         "<firstname>Peter</firstname>" + 
         "<sex>M</sex>" + 
         "<birthday>19.02.1993</birthday>" + 
         "<group>group1</group>" + 
         "<language>E</language>" + 
         "<type>H</type>" + 
         "</personalinfo>" + 
         "<items>" + 
         "<item>item1</item>" + 
         "<item>item2</item>" + 
         "<item>item3</item>" + 
         "<item>item4</item>" + 
         "<item>item5</item>" + 
         "<item>item6</item>" + 
         "<item>item7</item>" + 
         "<item>item8</item>" + 
         "</items>" + 
        "</candidate>" + 
        "</candidates>" + 
       "</candidatelist>"; 

      XDocument doc = XDocument.Parse(xml); 

      DataTable dt = new DataTable(); 
      dt.Columns.Add("name", typeof(string)); 
      dt.Columns.Add("firstname", typeof(string)); 
      dt.Columns.Add("sex", typeof(string)); 
      dt.Columns.Add("birthday", typeof(string)); 
      dt.Columns.Add("group", typeof(string)); 
      dt.Columns.Add("language", typeof(string)); 
      dt.Columns.Add("type", typeof(string)); 
      dt.Columns.Add("item1", typeof(string)); 
      dt.Columns.Add("item2", typeof(string)); 
      dt.Columns.Add("item3", typeof(string)); 
      dt.Columns.Add("item4", typeof(string)); 
      dt.Columns.Add("item5", typeof(string)); 
      dt.Columns.Add("item6", typeof(string)); 
      dt.Columns.Add("item7", typeof(string)); 
      dt.Columns.Add("item8", typeof(string)); 
      dt.Columns.Add("item9", typeof(string)); 
      dt.Columns.Add("item10", typeof(string)); 

      List<XElement> candidates = doc.Descendants("candidate").ToList(); 

      foreach (XElement candidate in candidates) 
      { 
       DataRow newRow = dt.Rows.Add(); 
       newRow["name"] = (string)candidate.Descendants("name").FirstOrDefault(); 
       newRow["firstname"] = (string)candidate.Descendants("firstname").FirstOrDefault(); 
       newRow["sex"] = (string)candidate.Descendants("sex").FirstOrDefault(); 
       newRow["birthday"] = (string)candidate.Descendants("birthday").FirstOrDefault(); 
       newRow["group"] = (string)candidate.Descendants("group").FirstOrDefault(); 
       newRow["language"] = (string)candidate.Descendants("language").FirstOrDefault(); 
       newRow["type"] = (string)candidate.Descendants("type").FirstOrDefault(); 

       List<string> items = candidate.Descendants("item").Select(x => (string)x).ToList(); 
       for (int index = 1; index <= items.Count; index++) 
       { 
        newRow["item" + index.ToString()] = items[index - 1]; 
       } 


      } 

     } 
    } 
}