visual C# 2005 express beta2读配置文件的问题:

app.config
-----------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8" ?>

<configuration>
 <configSections>
  <sectionGroup name="mySectionGroup">
   <section name="mySection"
      type="System.Configuration.DictionarySectionHandler" />
  </sectionGroup>
 </configSections>
 <mySectionGroup>
  <mySection>
   <add key="key1" value="value1" />
  </mySection>
 </mySectionGroup>
</configuration>

using System;
using System.Collections.Generic;
using System.Text;

using System.Collections.Specialized;
using System.Configuration;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                NameValueCollection ns = (NameValueCollection)ConfigurationManager.GetSection("mySectionGroup/mySection");
                string s = ns["key1"];
                int n = Convert.ToInt32(ns["key2"]);
                Console.WriteLine(s + ", " + n.ToString());
            }
            finally
            {
                Console.Read();
            }
        }
    }
}