using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlTypes;
using System.Data;
using System.Reflection;
using System.IO;
using System.Xml;
namespace CollectionToXml
{
 class Program
 {
  static void Main(string[] args)
  {
   //persons可替換為任何泛型集合
   var persons = new[] { 
    new Person("李元芳", 23) , 
    new Person("狄仁杰", 32) 
   };
   SqlXml sqlXml = GenericConver.CollectionToSqlXml(persons);
   Console.WriteLine(sqlXml.Value);
  }
  /// <summary>
  /// 泛型轉換類
  /// </summary>
  static class GenericConver
  {
   /// <summary>
   /// 集合轉換成SQLXML
   /// </summary>
   /// <typeparam name="T">泛型參數(shù)(集合成員的類型)</typeparam>
   /// <param name="TCollection">泛型集合</param>
   /// <returns></returns>
   public static SqlXml CollectionToSqlXml<T>(IEnumerable<T> TCollection)
   {
    //先把集合轉換成數(shù)據(jù)表，然后把數(shù)據(jù)表轉換成SQLXML
    return DataTableToSqlXml(CollectionToDataTable(TCollection));
   }
   /// <summary>
   /// 集合轉換成數(shù)據(jù)表
   /// </summary>
   /// <typeparam name="T">泛型參數(shù)(集合成員的類型)</typeparam>
   /// <param name="TCollection">泛型集合</param>
   /// <returns></returns>
   public static DataTable CollectionToDataTable<T>(IEnumerable<T> TCollection)
   {
    //獲取泛型的具體類型
    Type type = typeof(T);
    //獲取類型的公共屬性
    PropertyInfo[] properties = type.GetProperties();
    //創(chuàng)建數(shù)據(jù)表，表名為類型名稱
    DataTable table = new DataTable(type.Name);
    //把公共屬性轉行成表格列，再把表格列添加到表格中
    foreach (var property in properties)
    {
     //創(chuàng)建一個表格列，列名為屬性名，列數(shù)據(jù)類型為屬性的類型
     DataColumn column = new DataColumn(property.Name, property.PropertyType);
     //把表格列添加到表格中
     table.Columns.Add(column);
    }
    //把泛型集合元素添加到數(shù)據(jù)行中
    foreach (var item in TCollection)
    {
     //創(chuàng)建和表格行架構相同的表格行
     DataRow row = table.NewRow();
     //讀取元素所有屬性列的值，并根據(jù)屬性名稱，把屬性值添加到表格行中
     foreach (var property in properties)
      row[property.Name] = property.GetValue(item, null);
     //把表格行添加到表格中
     table.Rows.Add(row);
    }
    return table;
   }
   /// <summary>
   /// 數(shù)據(jù)表轉換成SQLXML
   /// </summary>
   /// <param name="table">數(shù)據(jù)表</param>
   /// <returns></returns>
   public static SqlXml DataTableToSqlXml(DataTable table)
   {
    SqlXml xml;
    //如果表格名為空，則設置表格名
    if (string.IsNullOrEmpty(table.TableName))
     table.TableName = "TableName";
    //把數(shù)據(jù)表轉換成XML
    using (var ms = new MemoryStream())
    {
     //把數(shù)據(jù)表轉換成XML格式，并寫入內存流
     table.WriteXml(ms);
     //把內存流讀取標記設置回起點
     ms.Position = 0;
     //使用XmlReader讀取內存流，并創(chuàng)建一個SqlXml對象
     xml = new SqlXml(XmlReader.Create(ms));
    }
    return xml;
   }
  }
  /// <summary>
  /// 人類(測試數(shù)據(jù)類)
  /// </summary>
  class Person
  {
   /// <summary>
   /// 構造函數(shù)
   /// </summary>
   /// <param name="name">名稱</param>
   /// <param name="age">年齡</param>
   public Person(string name, int age)
   { Name = name; Age = age; }
   /// <summary>
   /// 名稱
   /// </summary>
   public string Name { get; set; }
   /// <summary>
   /// 年齡
   /// </summary>
   public int Age { get; set; }
  }
 }
}

<DocumentElement>
 <Person>
 <Name>李元芳</Name>
 <Age>23</Age>
 </Person>
 <Person>
 <Name>狄仁杰</Name>
 <Age>32</Age>
 </Person>
</DocumentElement>