C#2005 一个简单的访问ini文件类

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using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;

namespace FileControl
{
/// <summary>
/// IniFile 的摘要说明。
/// </summary>
public class IniFile
{
private string configFileName;

  [DllImport("kernel32")]
  private static extern int GetPrivateProfileInt(
                         string lpAppName,
                         string lpKeyName,
                         int nDefault,
                         string lpFileName
                         );
  [DllImport("kernel32")]
  private static extern int GetPrivateProfileString(
          string lpAppName,
          string lpKeyName,
          string lpDefault,
          StringBuilder lpReturnedString,
          int nSize,
          string lpFileName
          );
  [DllImport("kernel32")]
  private static extern bool WritePrivateProfileString(
           string lpAppName,
           string lpKeyName,
           string lpString,
           string lpFileName
           );

  /// <summary>
  /// 设定配置文件名称
  /// </summary>
  /// <param name="fileName">配置文件名称</param>
  public IniFile(string fileName)
  {
   configFileName = fileName;
  }

  /// <summary>
  /// 从ini文件读取4字节整型值
  /// </summary>
  /// <param name="section">节名</param>
  /// <param name="key">键名</param>
  /// <param name="def">默认值</param>
  /// <returns>成功返回找到的条目的值；如指定的条目未找到，就返回默认值。</returns>
  public int ReadInt(string section,string key,int def)
  {
   return GetPrivateProfileInt(section,key,def,configFileName);
  }

  /// <summary>
  /// 从ini文件读取字符串值
  /// </summary>
  /// <param name="section">节名</param>
  /// <param name="key">键名</param>
  /// <param name="def">默认值</param>
  /// <returns>成功返回读取到的字符串;如指定的条目未找到，就返回默认值。</returns>
  public string ReadString(string section,string key,string def)
  {
   StringBuilder temp = new StringBuilder(1024);
   int stringLength;
   stringLength = GetPrivateProfileString(section,key,def,temp,1024,configFileName);
   if (stringLength > 0)
   {
    return temp.ToString();
   }
   else
   {
    return def;
   }
  }

  /// <summary>
  /// 向ini文件写入4字节整型值
  /// </summary>
  /// <param name="section">节名</param>
  /// <param name="key">键名</param>
  /// <param name="def">默认值</param>
  /// <returns>写入成功返回True,失败返回False。</returns>
  public bool WriteInt(string section,string key,int iVal)
  {
   return WritePrivateProfileString(section,key,iVal.ToString(),configFileName);
  }

  /// <summary>
  /// 向ini文件写入字符串值
  /// </summary>
  /// <param name="section">节名</param>
  /// <param name="key">键名</param>
  /// <param name="def">默认值</param>
  /// <returns>写入成功返回True,失败返回False。</returns>
  public bool WriteString(string section,string key,string strVal)
  {
   return WritePrivateProfileString(section,key,strVal,configFileName);
  }

  /// <summary>
  /// 从ini文件删除键
  /// </summary>
  /// <param name="section">节名</param>
  /// <param name="key">键名</param>
  /// <returns>删除成功返回True,失败返回False。</returns>
  public bool DelKey(string section,string key)
  {
   return WritePrivateProfileString(section,key,null,configFileName);
  }

  /// <summary>
  /// 从ini文件删除节
  /// </summary>
  /// <param name="section">节名</param>
  /// <returns>删除成功返回True,失败返回False。</returns>
  public bool DelSection(string section)
  {
   return WritePrivateProfileString(section,null,null,configFileName);
  }
}
}