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  1. using System;
  2.  
  3. public class User
  4. {
  5. 	public string id;
  6. 	public string pass;
  7. }
  8.  
  9. public class Test
  10. {
  11. 	public static void Main()
  12. 	{
  13. 		string target = @"D:\test.xml";
  14. 		List<User> user = new List<User>();
  15. 		acclist.LoadXml(target);
  16.  
  17. 		// your code goes here
  18. 	}
  19. }
  20.  
  21.       public class ListEx<Type> : System.Collections.Generic.List<Type>
  22.         {
  23.             // データ保存用のジェネリッククラス
  24.             public class Xmldata<Type>
  25.             {
  26.                 public Type[] data;
  27.             }
  28.  
  29.             // Xmlからコレクションを復元
  30.             public void LoadXml(string path)
  31.             {
  32.                 // コレクションをクリア
  33.                 this.Clear();
  34.  
  35.                 Xmldata<Type> buff = null;
  36.                 try
  37.                 {
  38.                     System.Xml.XmlDocument xdoc = new System.Xml.XmlDocument();
  39.                     System.Xml.Serialization.XmlSerializer xml = new System.Xml.Serialization.XmlSerializer(typeof(Xmldata<Type>));
  40.  
  41.                     xdoc.PreserveWhitespace = true;
  42.                     xdoc.Load(path);
  43.  
  44.                     System.Xml.XmlNodeReader xnr = new System.Xml.XmlNodeReader(xdoc.DocumentElement);
  45.  
  46.                     buff = (Xmldata<Type>)xml.Deserialize(xnr);
  47.  
  48.                     for (int i = 0; i < buff.data.Length; i++)
  49.                     {
  50.                         this.Add(buff.data[i]);
  51.                     }
  52.                 }
  53.  
  54.                 #region 例外処理
  55.                 catch
  56.                 {
  57.  
  58.                 }
  59.                 #endregion
  60.  
  61.                 return;
  62.             }
  63.  
  64.             // これでXmlシリアライズしたものを拡張メソッドのLoadXmlで読もうとした
  65.             public void SaveXml(string path)
  66.             {
  67.                 Xmldata<Type> xmldata = new Xmldata<Type>();
  68.  
  69.                 xmldata.data = this.ToArray();
  70.  
  71.                 try
  72.                 {
  73.                     using (System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.Create))
  74.                     {
  75.                         System.Xml.Serialization.XmlSerializer xml = new System.Xml.Serialization.XmlSerializer(typeof(Xmldata<Type>));
  76.  
  77.                         // xmlファイルに書き込み
  78.                         xml.Serialize(fs, xmldata);
  79.                     }
  80.                 }
  81.  
  82.                 #region 例外処理
  83.                 catch
  84.                 {
  85.  
  86.                 }
  87.                 #endregion
  88.  
  89.                 return;
  90.             }
  91.         }
  92.  
  93. static class Linq
  94. {
  95.            public class XmlData<Type> { public Type[] data; }
  96.  
  97.             public static void LoadXml<Type>(this List<Type> list, string path)
  98.             {
  99.                 list.Clear();
  100.  
  101.                 XmlData<Type> xmldata = null;
  102.  
  103.                 XmlDocument xdoc = new System.Xml.XmlDocument();
  104.                 XmlSerializer xml = new System.Xml.Serialization.XmlSerializer(typeof(XmlData<Type>));
  105.  
  106.                 xdoc.PreserveWhitespace = true;
  107.                 xdoc.Load(path);
  108.  
  109.                 XmlNodeReader xnr = new System.Xml.XmlNodeReader(xdoc.DocumentElement);
  110.  
  111.                 xmldata = (XmlData<Type>)xml.Deserialize(xnr);
  112.  
  113.                 for (int i = 0; i < xmldata.data.Length; i++)
  114.                     list.Add(xmldata.data[i]);
  115.             }
  116.  
  117.             public static void SaveXml<Type>(this List<Type> list, string path)
  118.             {
  119.                 XmlData<Type> xmldata = new XmlData<Type>();
  120.                 xmldata.data = list.ToArray();
  121.  
  122.                 using (FileStream fs = new FileStream(path, FileMode.Create))
  123.                 {
  124.                     XmlSerializer xml = new XmlSerializer(typeof(XmlData<Type>));
  125.  
  126.                     xml.Serialize(fs, xmldata);
  127.                 }
  128.             }
  129.  
  130. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cs(24,34): warning CS0693: Type parameter `Type' has the same name as the type parameter from outer type `ListEx<Type>'
prog.cs(21,27): (Location of the symbol related to previous warning)
prog.cs(97,51): error CS0246: The type or namespace name `List' could not be found. Are you missing `System.Collections.Generic' using directive?
prog.cs(117,51): error CS0246: The type or namespace name `List' could not be found. Are you missing `System.Collections.Generic' using directive?
Compilation failed: 2 error(s), 1 warnings
stdout
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Standard output is empty
https://ideone.com/RexR1Z
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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