C#读写INI文件的方法

using System;using System.IO;using System.Runtime.InteropServices;using System.Text;using System.Collections;using System.Collections.Specialized;namespace wuyisky{ /// <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))   {    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, ""));   }  }  ////读取指定的Section的所有Value到列表中，  //public void ReadSectionValues(string Section, NameValueCollection Values,char splitString)  //{　 string sectionValue;  //　　string[] sectionValueSplit;  //　　StringCollection KeyList = new StringCollection();  //　　ReadSection(Section, KeyList);  //　　Values.Clear();  //　　foreach (string key in KeyList)  //　　{  //　　　　sectionValue=ReadString(Section, key, "");  //　　　　sectionValueSplit=sectionValue.Split(splitString);  //　　　　Values.Add(key, sectionValueSplit[0].ToString(),sectionValueSplit[1].ToString());  //　　}  //}  //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();  } }}